@article{CMJ_2010__60_3_a12,
     author = {Gonska, Heiner and P\u{a}lt\u{a}nea, Radu},
     title = {Simultaneous approximation by a class of {Bernstein-Durrmeyer} operators preserving linear functions},
     journal = {Czechoslovak Mathematical Journal},
     pages = {783--799},
     publisher = {mathdoc},
     volume = {60},
     number = {3},
     year = {2010},
     mrnumber = {2672415},
     zbl = {1224.41016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2010__60_3_a12/}
}