@article{KJM_2007_30_a22,
     author = {Slavko Simi\'c},
     title = {On lambda-approximations for analytic functions on the unit disc},
     journal = {Kragujevac Journal of Mathematics},
     pages = {305 },
     publisher = {mathdoc},
     volume = {30},
     year = {2007},
     zbl = {1224.26009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2007_30_a22/}
}