@article{GDZPPN002277867,
title = {Separable systems in classical and wave mechanics.},
journal = {Mathematische Annalen},
volume = {111},
year = {1935},
pages = {459-468},
zbl = {0012.08906},
url = {http://dml.mathdoc.fr/item/GDZPPN002277867}
}
Madhava Rao, B.S. Separable systems in classical and wave mechanics.. Mathematische Annalen, Tome 111 (1935) pp. 459-468. http://gdmltest.u-ga.fr/item/GDZPPN002277867/