@article{urn:eudml:doc:43893, title = {The derivatives of a meromorphic function and Nevanlinna's deficient values.}, journal = {Collectanea Mathematica}, volume = {22}, year = {1971}, pages = {5-17}, zbl = {0226.30030}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:43893} }
Kamthan Kumar, Pawan. The derivatives of a meromorphic function and Nevanlinna's deficient values.. Collectanea Mathematica, Tome 22 (1971) pp. 5-17. http://gdmltest.u-ga.fr/item/urn:eudml:doc:43893/