@article{MZ_1965__90_170460,
     author = {Joseph A. Cima},
     title = {A theorem on {Blaschke} quotients.},
     journal = {Mathematische Zeitschrift},
     pages = {14--23},
     publisher = {mathdoc},
     volume = {90},
     year = {1965},
     zbl = {0145.31002},
     url = {http://geodesic.mathdoc.fr/item/MZ_1965__90_170460/}
}