On an existence result for a class of \((p,q)\)-gradient elliptic systems via a fibering method
By using the fibering method introduced by Pohozaev, the author proves the existence of multiple solutions for a Dirichlet problem associated to a quasilinear system involving a pair of \((p,q)\)-Laplacian operators and functions derived from a potential with bounded coefficients and of changing sign.
scientific article; zbMATH DE number 6078518