@article{AM2_1968__1_135973,
     author = {S.E. Warschawski},
     title = {A {Perturbation} {Method} in {Conformal} {Mapping.} {(Short} {Communication).}},
     journal = {Aequationes mathematicae},
     pages = {213--215},
     publisher = {mathdoc},
     volume = {1},
     year = {1968},
     url = {http://geodesic.mathdoc.fr/item/AM2_1968__1_135973/}
}