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@article{MAT_1966_10_6_a3, author = {F. W. Gehring and J. V\"ais\"al\"a}, title = {The coefficients of quasiconformality of domains in space}, journal = {Matematika}, pages = {60--120}, publisher = {mathdoc}, volume = {10}, number = {6}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1966_10_6_a3/} }
F. W. Gehring; J. Väisälä. The coefficients of quasiconformality of domains in space. Matematika, Tome 10 (1966) no. 6, pp. 60-120. http://geodesic.mathdoc.fr/item/MAT_1966_10_6_a3/