@article{CMUC_1961_2_4_a1,
     author = {Marek, Ivo},
     title = {A method for improving the convergence of iteration sequences},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {6--9},
     year = {1961},
     volume = {2},
     number = {4},
     zbl = {0195.43001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1961_2_4_a1/}
}