@article{MZM_1969_6_5_a11,
     author = {B. P. Kufarev},
     title = {Metrization of the space of all simple rings in the region of family $\mathfrak B$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {607--618},
     publisher = {mathdoc},
     volume = {6},
     number = {5},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1969_6_5_a11/}
}