Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1979_2_a9, author = {V. B. Lender}, title = {$\mathfrak{R}\mathrm{NA}$-solvable structures}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {69--72}, publisher = {mathdoc}, number = {2}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1979_2_a9/} }
V. B. Lender. $\mathfrak{R}\mathrm{NA}$-solvable structures. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 2 (1979), pp. 69-72. http://geodesic.mathdoc.fr/item/IVM_1979_2_a9/