@article{10_4064_ap_28_2_123_133,
     author = {S. K. Singh and V. N. Kulkarni},
     title = {Characteristic function of a meromorphic function and its derivative},
     journal = {Annales Polonici Mathematici},
     pages = {123--133},
     publisher = {mathdoc},
     volume = {28},
     number = {2},
     year = {1973},
     doi = {10.4064/ap-28-2-123-133},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-28-2-123-133/}
}