Positive equivalences
Algebra i logika, Tome 10 (1971) no. 6, pp. 620-650
Voir la notice de l'article provenant de la source Math-Net.Ru
@article{AL_1971_10_6_a1,
author = {Yu. L. Ershov},
title = {Positive equivalences},
journal = {Algebra i logika},
pages = {620--650},
publisher = {mathdoc},
volume = {10},
number = {6},
year = {1971},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/AL_1971_10_6_a1/}
}
Yu. L. Ershov. Positive equivalences. Algebra i logika, Tome 10 (1971) no. 6, pp. 620-650. http://geodesic.mathdoc.fr/item/AL_1971_10_6_a1/