The spherical derivative of meromorphic functions in the neighbourhood of an isolated singularity.
Commentarii mathematici Helvetici, Tome 33 (1959), pp. 196-205
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ZblOlli Lehto. The spherical derivative of meromorphic functions in the neighbourhood of an isolated singularity.. Commentarii mathematici Helvetici, Tome 33 (1959), pp. 196-205. http://geodesic.mathdoc.fr/item/CMH_1959__33_139172/
@article{CMH_1959__33_139172,
author = {Olli Lehto},
title = {The spherical derivative of meromorphic functions in the neighbourhood of an isolated singularity.},
journal = {Commentarii mathematici Helvetici},
pages = {196--205},
year = {1959},
volume = {33},
zbl = {0086.06402},
url = {http://geodesic.mathdoc.fr/item/CMH_1959__33_139172/}
}