@article{GDZPPN002023377, title = {A Perturbation Method in Conformal Mapping.}, journal = {Aequationes mathematicae}, volume = {2}, year = {1969}, pages = {64-85}, zbl = {0193.37504}, url = {http://dml.mathdoc.fr/item/GDZPPN002023377} }
Warschawski, S.E. A Perturbation Method in Conformal Mapping.. Aequationes mathematicae, Tome 2 (1969) pp. 64-85. http://gdmltest.u-ga.fr/item/GDZPPN002023377/