@article{03589769, title = {Generalized Whittaker's equations for holonomic mechanical systems.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {1}, year = {1978}, pages = {245-253}, doi = {10.1155/S0161171278000289}, zbl = {0378.70012}, language = {en}, url = {http://dml.mathdoc.fr/item/03589769} }
Hussain, Munawar. Generalized Whittaker's equations for holonomic mechanical systems.. International Journal of Mathematics and Mathematical Sciences, Tome 1 (1978) pp. 245-253. doi : 10.1155/S0161171278000289. http://gdmltest.u-ga.fr/item/03589769/