The Sverdlovsk tetrad.
Shevrin, L.N.
Semigroup forum, Tome 4 (1972), p. 274-280 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1972-01-01
EUDML-ID : urn:eudml:doc:133906 
@article{GDZPPN001248413,
     title = {The Sverdlovsk tetrad.},
     journal = {Semigroup forum},
     volume = {4},
     year = {1972},
     pages = {274-280},
     url = {http://dml.mathdoc.fr/item/GDZPPN001248413}
}

Shevrin, L.N. The Sverdlovsk tetrad.. Semigroup forum, Tome 4 (1972) pp. 274-280. http://gdmltest.u-ga.fr/item/GDZPPN001248413/