Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1979_26_2_a4, author = {G. M. Ustinov}, title = {Convergence of positive operators}, journal = {Matemati\v{c}eskie zametki}, pages = {201--216}, publisher = {mathdoc}, volume = {26}, number = {2}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1979_26_2_a4/} }
G. M. Ustinov. Convergence of positive operators. Matematičeskie zametki, Tome 26 (1979) no. 2, pp. 201-216. http://geodesic.mathdoc.fr/item/MZM_1979_26_2_a4/