@article{1183493190,
author = {Richmond, D. E.},
title = {A new proof of certain relations of Morse in the calculus of variations in the large},
journal = {Bull. Amer. Math. Soc.},
volume = {35},
number = {6},
year = {1929},
pages = { 248-258},
language = {en},
url = {http://dml.mathdoc.fr/item/1183493190}
}
Richmond, D. E. A new proof of certain relations of Morse in the calculus of variations in the large. Bull. Amer. Math. Soc., Tome 35 (1929) no. 6, pp. 248-258. http://gdmltest.u-ga.fr/item/1183493190/