@article{1183500022, author = {Reid, W. T.}, title = {Boundary value problems of the calculus of variations}, journal = {Bull. Amer. Math. Soc.}, volume = {43}, number = {12}, year = {1937}, pages = { 633-666}, language = {en}, url = {http://dml.mathdoc.fr/item/1183500022} }
Reid, W. T. Boundary value problems of the calculus of variations. Bull. Amer. Math. Soc., Tome 43 (1937) no. 12, pp. 633-666. http://gdmltest.u-ga.fr/item/1183500022/