| Publication | Date of Publication | Type |
|---|
| On endomorphism monoids in varieties of bands | 2016-10-26 | Paper |
| Frames: Topology Without Points | 2015-10-09 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5414352 | 2014-05-05 | Paper |
| Endomorphism monoids in varieties of commutative semigroups. | 2013-11-22 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2842082 | 2013-07-31 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4918196 | 2013-04-23 | Paper |
| Universality of categories of coalgebras | 2012-04-12 | Paper |
| Finite retracts of Priestley spaces and sectional coproductivity | 2011-05-11 | Paper |
| Relative universality and universality obtained by adding constants | 2011-05-11 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3083076 | 2011-03-18 | Paper |
| On universal categories of coalgebras | 2010-11-22 | Paper |
| All clones are centralizer clones | 2009-11-25 | Paper |
| Almost \textit{ff}-universality implies \(Q\)-universality | 2009-11-16 | Paper |
| Tame parts of free summands in coproducts of Priestley spaces | 2009-07-23 | Paper |
| A Priestley sum of finite trees is acyclic | 2009-07-13 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3606621 | 2009-02-26 | Paper |
| Essential operations in centralizer clones | 2009-02-17 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3597354 | 2009-02-09 | Paper |
| Priestley configurations and Heyting varieties | 2009-01-29 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5387594 | 2008-05-14 | Paper |
| More on configurations in Priestley spaces, and some new problems | 2008-02-18 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3424875 | 2007-03-05 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3417719 | 2007-01-30 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3417724 | 2007-01-30 | Paper |
| The mysterious 2-crown | 2007-01-29 | Paper |
| The clone of a topological space: an inspiring book by Walter Taylor | 2007-01-29 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5393807 | 2006-10-24 | Paper |
| Finitely generated varieties of distributive double \(p\)-algebras universal modulo a group | 2006-01-17 | Paper |
| Configurations in coproducts of Priestley spaces | 2005-08-05 | Paper |
| On relative universality and \(Q\)-universality | 2005-04-07 | Paper |
| Almost ff-universal and q-universal varieties of modular 0-lattices | 2004-11-30 | Paper |
| Maps between a space and its square | 2004-11-23 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4415424 | 2003-08-06 | Paper |
| On coconnected algebras | 2003-04-09 | Paper |
| Endomorphism monoids of chained graphs | 2002-03-13 | Paper |
| Strongly alg-universal semigroup varieties | 2001-12-17 | Paper |
| On almost universal varieties of modular lattices | 2001-12-16 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2716443 | 2001-10-16 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4526154 | 2001-10-16 | Paper |
| Homomorphisms of complete distributive lattices | 2001-07-03 | Paper |
| Equimorphy in varieties of distributive double p-algebras | 2000-11-13 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4254424 | 2000-04-10 | Paper |
| On the endomorphism monoids of (uniquely) complemented lattices | 2000-03-15 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4261812 | 1999-09-15 | Paper |
| On full and faithful Kan extensions | 1999-06-14 | Paper |
| Equimorphy in varieties of double Heyting algebras | 1999-03-10 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4226235 | 1999-01-24 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4390741 | 1998-08-27 | Paper |
| Endomorphisms of complete Heyting algebras | 1998-03-12 | Paper |
| Disciplined Spaces and Centralizer Clone Segments | 1997-10-29 | Paper |
| On elementary equivalence and isomorphism of clone segments | 1996-09-15 | Paper |
| Extremal Prime Filters and Universality of Some Categories | 1996-07-31 | Paper |
| In memoriam Alan Day, 1941--1990 | 1996-03-25 | Paper |
| Amalgamation in varieties of distributive double \(p\)-algebras | 1995-10-09 | Paper |
| Homomorphisms of unary algebras and of their expansions | 1995-02-09 | Paper |
| Congruence permutable extensions of distributive doublep-algebras | 1994-12-12 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4300699 | 1994-08-23 | Paper |
| On congruences of double p-algebras with nonvoid core | 1994-03-29 | Paper |
| Automorphisms of semirings and of their reducts | 1993-02-08 | Paper |
| Algebraic functor slices | 1993-01-16 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3994023 | 1992-08-13 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3979114 | 1992-06-26 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3980097 | 1992-06-26 | Paper |
| Simultaneous representations in categories of algebras | 1990-01-01 | Paper |
| Categorical universality of regular double p-algebras | 1990-01-01 | Paper |
| Universal Varieties Of (0, 1)-Lattices | 1990-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3817283 | 1988-01-01 | Paper |
| Quotients of rigid (0,1)-lattices | 1985-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3689388 | 1985-01-01 | Paper |
| Universal varieties of distributive double p-algebras | 1985-01-01 | Paper |
| Almost universal varieties of monoids | 1984-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3342764 | 1984-01-01 | Paper |
| Universality of Small Lattice Varieties | 1984-01-01 | Paper |
| Group-universal unary varieties | 1980-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4184891 | 1978-01-01 | Paper |
| Homomorphisms of Integral Domains of Characteristic Zero | 1977-01-01 | Paper |
| Note on free products of Hopfian lattices | 1975-01-01 | Paper |
| Free Decompositions of a Lattice | 1975-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4124984 | 1975-01-01 | Paper |
| Agassiz sum of algebras | 1974-01-01 | Paper |
| Free products of hopfian lattices | 1974-01-01 | Paper |
| On Generating Free Products of Lattices | 1974-01-01 | Paper |
| Weak automorphisms of universal algebras | 1973-01-01 | Paper |
| Homomorphisms of commutative rings with unit element | 1973-01-01 | Paper |
| Chromatic automorphisms of graphs | 1973-01-01 | Paper |
| Testing Categories and Strong Universality | 1973-01-01 | Paper |
| Free products of Hopf groups | 1973-01-01 | Paper |
| Nonconstant Endomorphisms of Lattices | 1972-01-01 | Paper |
| On the endormorphism semigroup (and category) of bounded lattices | 1971-01-01 | Paper |
| On the endomorphism semigroup (and category) of bounded lattices | 1971-01-01 | Paper |
| One-to-one and onto homomorphisms of bounded lattices | 1971-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5606617 | 1969-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5554386 | 1968-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5602970 | 1968-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5555010 | 1967-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5583873 | 1967-01-01 | Paper |
