@article{oai:tsukuba.repo.nii.ac.jp:00016015,
 author = {Nunokawa, Mamoru},
 issue = {2},
 journal = {Tsukuba Journal of Mathematics},
 month = {Dec},
 pages = {273--286},
 title = {On the theory of multivalent functions},
 volume = {11},
 year = {1987}
}