@article{1077311794,
author = {Harrington, A. and Ortel, M.},
title = {The dilatation of an extremal quasi-conformal mapping},
journal = {Duke Math. J.},
volume = {43},
number = {1},
year = {1976},
pages = { 533-544},
language = {en},
url = {http://dml.mathdoc.fr/item/1077311794}
}
Harrington, A.; Ortel, M. The dilatation of an extremal quasi-conformal mapping. Duke Math. J., Tome 43 (1976) no. 1, pp. 533-544. http://gdmltest.u-ga.fr/item/1077311794/