@article{10_1007_s10587_012_0029_2,
     author = {Mahmudov, Nazim I.},
     title = {Approximation properties of bivariate complex $q${-Bernstein} polynomials in the case $q>1$},
     journal = {Czechoslovak Mathematical Journal},
     pages = {557--566},
     publisher = {mathdoc},
     volume = {62},
     number = {2},
     year = {2012},
     doi = {10.1007/s10587-012-0029-2},
     mrnumber = {2990194},
     zbl = {1265.33036},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-012-0029-2/}
}