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@article{MMO_1973_29_a9, author = {A. H. Liv\v{s}its and M. \v{S}. {\CYRS}alenko}, title = {Isomorphisms of special direct sums}, journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva}, pages = {165--189}, publisher = {mathdoc}, volume = {29}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MMO_1973_29_a9/} }
A. H. Livšits; M. Š. Сalenko. Isomorphisms of special direct sums. Trudy Moskovskogo matematičeskogo obŝestva, Trudy Moskovskogo Matematicheskogo Obshchestva, Tome 29 (1973), pp. 165-189. http://geodesic.mathdoc.fr/item/MMO_1973_29_a9/