Voir la notice de l'article provenant de la source Mathematicac Balkanica website
@article{MABA_2007_21_3-4_a9, author = {Ovidiu T. Pop}, title = {About {Some} {Linear} and {Positive} {Operators}}, journal = {Mathematica balkanica}, pages = {339}, publisher = {mathdoc}, volume = {21}, number = {3-4}, year = {2007}, url = {http://geodesic.mathdoc.fr/item/MABA_2007_21_3-4_a9/} }
Ovidiu T. Pop. About Some Linear and Positive Operators. Mathematica balkanica, Tome 21 (2007) no. 3-4, p. 339. http://geodesic.mathdoc.fr/item/MABA_2007_21_3-4_a9/