@article{AFM_2002_27_1_a19,
     author = {Kurt Strebel},
     title = {Extremal quasiconformal polygon mappings for arbitrary subdomains of compact {Riemann} surfaces},
     journal = {Annales Fennici Mathematici},
     pages = {237--247},
     year = {2002},
     volume = {27},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_2002_27_1_a19/}
}