Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{PORMA_1980__39_1-4_115421, author = {Franco de Oliveira, A.J.}, title = {Remark on a theory of classes used by {A.} {Machado}}, journal = {Portugaliae mathematica}, pages = {295--297}, publisher = {mathdoc}, volume = {39}, number = {1-4}, year = {1980}, mrnumber = {0776243}, zbl = {0562.03026}, language = {en}, url = {https://geodesic-test.mathdoc.fr/item/PORMA_1980__39_1-4_115421/} }
Franco de Oliveira, A.J. Remark on a theory of classes used by A. Machado. Portugaliae mathematica, Tome 39 (1980) no. 1-4, pp. 295-297. https://geodesic-test.mathdoc.fr/item/PORMA_1980__39_1-4_115421/