@article{CMH_1984__59_139974,
     author = {Ch. Pommerenke and F.W. Gehring},
     title = {On the {Nehari} univalence criterion and quasicircles.},
     journal = {Commentarii mathematici Helvetici},
     pages = {226--242},
     publisher = {mathdoc},
     volume = {59},
     year = {1984},
     zbl = {0543.30014},
     url = {http://geodesic.mathdoc.fr/item/CMH_1984__59_139974/}
}