@article{BMMS_2011_34_2_a4,
     author = {Sh. Chen and S. Ponnusamy and X. Wang},
     title = {Coefficient {Estimates} and {Landau-Bloch's} {Constant} for {Planar} {Harmonic} {Mappings}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {2011},
     volume = {34},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/BMMS_2011_34_2_a4/}
}