@article{1183498923, author = {Marden, Morris}, title = {On the zeros of the derivative of a rational function}, journal = {Bull. Amer. Math. Soc.}, volume = {42}, number = {12}, year = {1936}, pages = { 400-406}, language = {en}, url = {http://dml.mathdoc.fr/item/1183498923} }
Marden, Morris. On the zeros of the derivative of a rational function. Bull. Amer. Math. Soc., Tome 42 (1936) no. 12, pp. 400-406. http://gdmltest.u-ga.fr/item/1183498923/