@article{GDZPPN002088967, title = {Critical Points of an Algebraic Function.}, journal = {Inventiones mathematicae}, volume = {14}, year = {1971}, pages = {210-224}, zbl = {0223.14003}, url = {http://dml.mathdoc.fr/item/GDZPPN002088967} }
Iversen, B. Critical Points of an Algebraic Function.. Inventiones mathematicae, Tome 14 (1971) pp. 210-224. http://gdmltest.u-ga.fr/item/GDZPPN002088967/