@article{AUM_2010_54_1_a4,
     author = {Sibelska, Agnieszka},
     title = {On the order of starlikeness and convexity of complex harmonic functions with a two-parameter coefficient condition},
     journal = {Annales Universitatis Mariae Curie-Sk{\l}odowska. Mathematica },
     publisher = {mathdoc},
     volume = {54},
     number = {1},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUM_2010_54_1_a4/}
}