@article{IVM_1970_6_a4,
     author = {R. K. Vasil'ev},
     title = {The convergence of positive linear operators and of singular integrals in certain partially ordered spaces},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {35--45},
     publisher = {mathdoc},
     number = {6},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1970_6_a4/}
}