Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1973_4_a10, author = {A. G. Poroshkin}, title = {Set functions with values in {a~Boolean} algebra}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {87--98}, publisher = {mathdoc}, number = {4}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1973_4_a10/} }
A. G. Poroshkin. Set functions with values in a~Boolean algebra. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 4 (1973), pp. 87-98. http://geodesic.mathdoc.fr/item/IVM_1973_4_a10/