@article{AFM_2008_33_1_a5,
     author = {J. Milne Anderson and Alexander Vasil'ev},
     title = {Lower {Schwarz-Pick} estimates and angular derivatives},
     journal = {Annales Fennici Mathematici},
     pages = {101--110},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_2008_33_1_a5/}
}