@article{MZ_1975__144_172248,
     author = {Peter Lappan},
     title = {A {p-Valent} {Function} with a {Non-Normal} {Derivative.}},
     journal = {Mathematische Zeitschrift},
     pages = {147--148},
     publisher = {mathdoc},
     volume = {144},
     year = {1975},
     zbl = {0307.30032},
     url = {http://geodesic.mathdoc.fr/item/MZ_1975__144_172248/}
}