@article{oai:ynu.repo.nii.ac.jp:00006886, author = {Obradovic, Milutin and Nunokawa, Mamoru}, issue = {1}, journal = {Yokohama Mathematical Journal = 横濱市立大學紀要. D部門, 数学}, month = {}, note = {application/pdf, For a function $ f(z)=z+a_{2}z^{2}+¥cdots$ analytic in the unit disc we give certain criteria for univalence in terms of $(D^{n}f(z))/z$ , where $D^{n}f$ denotes the Ruscheweyh derivative.}, pages = {1--5}, title = {SOME CONDITIONS FOR UNIVALENCE DEFINED BY RUSCHEWEYH'S DERIVATIVE}, volume = {43}, year = {1995} }