@article{10_1007_s10587_011_0003_4,
     author = {Qiao, Jinjing and Wang, Xiantao},
     title = {Extreme points of subordination and weak subordination families of harmonic mappings},
     journal = {Czechoslovak Mathematical Journal},
     pages = {145--155},
     publisher = {mathdoc},
     volume = {61},
     number = {1},
     year = {2011},
     doi = {10.1007/s10587-011-0003-4},
     mrnumber = {2782765},
     zbl = {1224.30111},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-011-0003-4/}
}