@article{10_4064_ap_40_3_291_294,
     author = {Prakash G. Umarani},
     title = {The radius of close-to-convexity of $V_k(\ensuremath{\varrho})$},
     journal = {Annales Polonici Mathematici},
     pages = {291--294},
     publisher = {mathdoc},
     volume = {40},
     number = {3},
     year = {1981},
     doi = {10.4064/ap-40-3-291-294},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-40-3-291-294/}
}