@article{RCM_2017_51_1_a1,
     author = {Jochen Becker and Christian Pommerenke},
     title = {On analytic families of conformal maps},
     journal = {Revista colombiana de matematicas},
     pages = {15--19},
     publisher = {mathdoc},
     volume = {51},
     number = {1},
     year = {2017},
     url = {http://geodesic.mathdoc.fr/item/RCM_2017_51_1_a1/}
}