RT Journal T1 ON NONCOERCIVE (p,q)-EQUATIONS A1 Nikolaos S. PAPAGEORGIOU, Nikolaos S. PAPAGEORGIOU, Calogero VETRO PB Acta mathematica scientia,Series B FD 2021-10-25 YR 2021 JF Acta mathematica scientia, Series B JO Acta mathematica scientia,Series B VO 41 IS 5 SP 1788 DO 10.1007/s10473-021-0524-3 K1 (#i#p,q#/i#)-Laplacian;principal eigenvalue;constant sign and nodal solutions;extremal solutions;nonlinear regularity LK {http://121.43.60.238/sxwlxbB/EN/article/article_16534.shtml}