Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1977__153_172474, author = {Burton Rodin and Stefan E. Warschawski}, title = {Extremal {Length} and {Univalent} {Functions,} {I.} {The} {Angular} {Derivative.}}, journal = {Mathematische Zeitschrift}, pages = {1--18}, publisher = {mathdoc}, volume = {153}, year = {1977}, zbl = {0384.30006}, url = {http://geodesic.mathdoc.fr/item/MZ_1977__153_172474/} }
Burton Rodin; Stefan E. Warschawski. Extremal Length and Univalent Functions, I. The Angular Derivative.. Mathematische Zeitschrift, Tome 153 (1977), pp. 1-18. http://geodesic.mathdoc.fr/item/MZ_1977__153_172474/