@article{CMH_1986__61_140054,
     author = {Reiner K\"uhnau},
     title = {Wann sind die {Grunskyschen} {Koeffizientenbedingungen} hinreichend f\"ur {Q-quasikonforme} {Fortsetzbarkeit?}},
     journal = {Commentarii mathematici Helvetici},
     pages = {290--307},
     publisher = {mathdoc},
     volume = {61},
     year = {1986},
     zbl = {0605.30023},
     url = {http://geodesic.mathdoc.fr/item/CMH_1986__61_140054/}
}