@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/