@article{VMUMM_1993_1_a9,
     author = {S. A. Pyartli},
     title = {On the simultaneous extension of the topology and pseudonorm of a monoid to its semigroup ring},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {38--42},
     publisher = {mathdoc},
     number = {1},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1993_1_a9/}
}