@article{DAN_1979_248_5_a0,
     author = {Yu. A. Abramovich and A. I. Veksler and A. V. Koldunov},
     title = {On operators preserving disjointness},
     journal = {Doklady Akademii Nauk},
     pages = {1033--1036},
     publisher = {mathdoc},
     volume = {248},
     number = {5},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_248_5_a0/}
}