@article{MZ_1983__184_173349,
     author = {Richard Fehlmann},
     title = {Extremal {Quasiconformal} {Mappings} with {Free} {Boundary} {Components} in {Domains} of {Arbitray} {Connectivity.}},
     journal = {Mathematische Zeitschrift},
     pages = {109--126},
     publisher = {mathdoc},
     volume = {184},
     year = {1983},
     zbl = {0501.30020},
     url = {http://geodesic.mathdoc.fr/item/MZ_1983__184_173349/}
}