@article{ASUO_2011_XIX_1_a20,
     author = {Ovidiu T. Pop and Mircea D. Farcas and Dan Barbosu },
     title = { On a general class of linear and
                            positive operators },
     journal = {Analele Universit\u{a}\c{t}ii "Ovidius" Constan\c{t}a Seria Matematic\u{a}},
     publisher = {mathdoc},
     volume = {XIX},
     number = {1},
     year = {2011},
     url = {http://geodesic.mathdoc.fr/item/ASUO_2011_XIX_1_a20/}
}