| Publication | Date of Publication | Type |
|---|
| https://portal.mardi4nfdi.de/entity/Q3001828 | 2011-05-31 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4257214 | 1999-08-09 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4309829 | 1996-02-15 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4276459 | 1994-10-13 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4307254 | 1994-09-27 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4019620 | 1993-01-16 | Paper |
| Establishing Hyperbolic Green’s Functions via Leibniz’s Rule | 1992-06-25 | Paper |
| A self-adjoint problem for the wave equation in higher dimensions | 1991-01-01 | Paper |
| Euclid turns to probability | 1989-01-01 | Paper |
| Correlation effects for stochastic zeros of Sturm-Liouville equations | 1988-01-01 | Paper |
| Conjugate points of fourth order differential equations with impulses | 1988-01-01 | Paper |
| Symmetric Green's Function for a Class of CIV Boundary Value Problems | 1988-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4726626 | 1987-01-01 | Paper |
| Stability criteria for conjugate points of indefinite second order differential systems | 1986-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3746217 | 1986-01-01 | Paper |
| Allowable delays for positive diffusion processes | 1985-01-01 | Paper |
| Kiguradze classes for characteristic initial value problems | 1985-01-01 | Paper |
| A class of hyperbolic focal point problems | 1984-01-01 | Paper |
| Asymptotic solutions of semilinear elliptic equations | 1984-01-01 | Paper |
| Lower Estimates for Zeros of Stochastic Sturm-Liouville Problems | 1984-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3318723 | 1984-01-01 | Paper |
| Oscillation Properties of Nonlinear Hyperbolic Equations | 1984-01-01 | Paper |
| Oscillation Properties of Weakly Time Dependent Hyperbolic Equations | 1983-01-01 | Paper |
| Qualitative theory for hyperbolic characteristic initial value problems | 1983-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3324343 | 1983-01-01 | Paper |
| Picone-Type Theorems for Semidiscrete Hyperbolic Equations | 1983-01-01 | Paper |
| Nonlinear relationships between oscillation and asymptotic behavior | 1982-01-01 | Paper |
| Picone-type theorems for hyperbolic partial differential equations | 1982-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3041638 | 1982-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3343028 | 1982-01-01 | Paper |
| A class of comparison theorems for non-linear hyperbolic initial value problems | 1981-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3913090 | 1981-01-01 | Paper |
| A Sturm Theorem for Partial Differential Equations of Mixed Type | 1981-01-01 | Paper |
| Oscillation Theorems for Nonlinear Ordinary Differential Equations of Even Order | 1981-01-01 | Paper |
| Extremal solutions of general nonlinear differential equations | 1980-01-01 | Paper |
| Oscillation criteria for weakly superlinear differential equations of even order | 1980-01-01 | Paper |
| Nonlinear differential systems with monotone solutions | 1980-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3852494 | 1980-01-01 | Paper |
| Extremal Solutions for a Class of Nonlinear Differential Equations | 1980-01-01 | Paper |
| Higher order Wirtinger inequalities | 1980-01-01 | Paper |
| Nonlinear differential equations with monotone solutions | 1979-01-01 | Paper |
| Removable singularities for generalized Prüfer transformations | 1978-01-01 | Paper |
| Conjugate points for nonlinear differential equations | 1978-01-01 | Paper |
| VARIATIONAL SYSTEMS DISCONJUGACY CRITERIA FOR WNSELFADJOINT DIFFERENTIAL EQUATIONS | 1978-01-01 | Paper |
| VARIATIONAL SYSTEMS DISCONJUGACY CRITERIA FOR WNSELFADJOINT DIFFERENTIAL EQUATIONS | 1978-01-01 | Paper |
| On systems-disconjugacy and a question of Barrett | 1978-01-01 | Paper |
| Comparison Theorems for a Class of Selfadjoint Fourth Order Differential Equations | 1977-01-01 | Paper |
| Mathematics, social decisions and the Law† | 1976-01-01 | Paper |
| 12.—Rotation Properties of Adjoint Pairs of Differential Systems | 1976-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4159657 | 1976-01-01 | Paper |
| Rotation properties of a class of second order differential systems | 1975-01-01 | Paper |
| A dynamical criterion for conjugate points | 1975-01-01 | Paper |
| Analogy in Solving Poisson's Equation | 1975-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4100784 | 1975-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4108597 | 1975-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4179245 | 1975-01-01 | Paper |
| Nonselfadjoint fourth order differential equations with conjugate points | 1974-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4064336 | 1974-01-01 | Paper |
| A Non-Trigonometric PrÜFer Transformation† | 1974-01-01 | Paper |
| A nonselfadjoint dynamical system | 1974-01-01 | Paper |
| Comparison Theorems for Special Classes of Nonselfadjoint Elliptic Equations | 1974-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5179770 | 1974-01-01 | Paper |
| Oscillation theory | 1973-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4771565 | 1973-01-01 | Paper |
| Comparison Theorems for Nonselfadjoint Differential Equations Based on Integral Inequalities | 1972-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5637267 | 1972-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5655717 | 1972-01-01 | Paper |
| Oscillation Criteria for a Class of Fourth Order Differential Equations | 1972-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5682645 | 1972-01-01 | Paper |
| Oscillation criteria for selfadjoint elliptic equations | 1972-01-01 | Paper |
| A Prufer Transformation for Nonselfadjoint Systems | 1972-01-01 | Paper |
| Disconjugacy Criteria for Nonselfadjoint Differential Equations of Even Order | 1971-01-01 | Paper |
| A Class of Comparison Theorems for Non-Selfadjoint Elliptic Equations | 1971-01-01 | Paper |
| Applications of a comparison theorem for elliptic equations | 1971-01-01 | Paper |
| On a comparison theorem for strongly elliptic systems | 1971-01-01 | Paper |
| A Picone identity for strongly elliptic systems | 1971-01-01 | Paper |
| Nodal domain theorems for general elliptic equations | 1971-01-01 | Paper |
| On Abstract Pruefer Transformations | 1970-01-01 | Paper |
| Local Essential Self-Adjointness for Singular Elliptic Operators | 1970-01-01 | Paper |
| A Picone identity for first order differential systems | 1970-01-01 | Paper |
| A comparison theorem for \(n\)-th order differential equations | 1970-01-01 | Paper |
| A comparison theorem for general elliptic equations with mixed boundary conditions | 1970-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5590272 | 1970-01-01 | Paper |
| A Comparison Theorem for Conjugate Points of General Selfadjoint Differential Equations | 1970-01-01 | Paper |
| Oscillation Criteria for Nonlinear Matrix Differential Equations | 1970-01-01 | Paper |
| A variational principle for the first eigenvalue of a semi-free membrane | 1969-01-01 | Paper |
| A generalized Pruefer transformation | 1969-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5563649 | 1969-01-01 | Paper |
| Sturmian Theorems and Positive Resolvents | 1969-01-01 | Paper |
| A Remark on a Comparison Theorem of Swanson | 1969-01-01 | Paper |
| Sturmian Theorems for Hyperbolic Equation | 1969-01-01 | Paper |
| A Sturm theorem for strongly elliptic systems and applications | 1969-01-01 | Paper |
| Lower Bounds for the Essential Spectrum of Fourth-Order Differential Operators | 1969-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5579792 | 1969-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5581860 | 1969-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5590263 | 1969-01-01 | Paper |
| Criteria for positive Green's functions | 1968-01-01 | Paper |
| A criterion for nondiscrete lower spectra | 1968-01-01 | Paper |
| An Abstract Oscillation Theorem | 1968-01-01 | Paper |
| A Strong Comparison Theorem for Selfadjoint Elliptic Equations | 1968-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5590271 | 1968-01-01 | Paper |
| A Sturmian Theorem for Positive Matrices | 1967-01-01 | Paper |
| Disconjugacy in $E^n $ | 1967-01-01 | Paper |
| Elliptic Operators with a Purely Continuous Spectrum | 1965-01-01 | Paper |
| Comparison Theorems for Constrained Rods | 1964-01-01 | Paper |
| Oscillation Theorems for Elliptic Equations | 1964-01-01 | Paper |
| Differential Operators with a Purely Continuous Spectrum | 1963-01-01 | Paper |
| A New Proof of a Comparison Theorem for Elliptic Equations | 1963-01-01 | Paper |
| The spectrum of singular self-adjoint elliptic operators | 1961-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3845548 | 1960-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5341148 | 1960-01-01 | Paper |
