@article{BASM_2015_1_a6,
     author = {V. I. Arnautov and G. N. Ermakova},
     title = {On the number of ring topologies on countable rings},
     journal = {Buletinul Academiei de \c{S}tiin\c{t}e a Republicii Moldova. Matematica},
     pages = {103--114},
     publisher = {mathdoc},
     number = {1},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BASM_2015_1_a6/}
}