@article{GDZPPN002026023, title = {Non-Quadratic Variational Problems}, journal = {Aequationes mathematicae}, volume = {7}, year = {1971}, pages = {199-210}, zbl = {0232.49011}, url = {http://dml.mathdoc.fr/item/GDZPPN002026023} }
HADELER, K.P. Non-Quadratic Variational Problems. Aequationes mathematicae, Tome 7 (1971) pp. 199-210. http://gdmltest.u-ga.fr/item/GDZPPN002026023/