@article{03608425, title = {Nonlinear differential equations and algebraic systems.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {1}, year = {1978}, pages = {257-267}, doi = {10.1155/S0161171278000290}, zbl = {0392.34001}, language = {en}, url = {http://dml.mathdoc.fr/item/03608425} }
Williams, Lloyd K. Nonlinear differential equations and algebraic systems.. International Journal of Mathematics and Mathematical Sciences, Tome 1 (1978) pp. 257-267. doi : 10.1155/S0161171278000290. http://gdmltest.u-ga.fr/item/03608425/