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@article{AL_1970_9_6_a4, author = {Yu. L. Ershov}, title = {Inseparable pairs}, journal = {Algebra i logika}, pages = {661--666}, publisher = {mathdoc}, volume = {9}, number = {6}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1970_9_6_a4/} }
Yu. L. Ershov. Inseparable pairs. Algebra i logika, Tome 9 (1970) no. 6, pp. 661-666. http://geodesic.mathdoc.fr/item/AL_1970_9_6_a4/