@article{10_4064_ap_40_3_245_257,
     author = {A. Zieli\'nska and K. Zyskowska},
     title = {Estimation of the sixth coefficient in the class of bounded univalent functions with real coefficients},
     journal = {Annales Polonici Mathematici},
     pages = {245--257},
     publisher = {mathdoc},
     volume = {40},
     number = {3},
     year = {1981},
     doi = {10.4064/ap-40-3-245-257},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-40-3-245-257/}
}