RT Book, Section T1 Inverse problem in the calculus of variations in the first-order quasi-linear case. A1 Muñoz Masqué, Jaime A1 Pozo Coronado, Luis Miguel A2 Andrica, Dorin A2 Blaga, Paul A. A2 Moroianu, Sergiu AB We summarize und analyze several results concerning the variational character of a set of first order quasi-linear PDEs. A local characterization of the problem is given, and the global obstructions to the problem are obtained. PB Cluj : Cluj University Press SN 973-610429-X YR 2006 FD 2006 LK https://hdl.handle.net/20.500.14352/53248 UL https://hdl.handle.net/20.500.14352/53248 DS Docta Complutense RD 10 abr 2025