@article{105244, author = {Ale\v s Pultr and Ji\v r\'\i\ Sichler}, title = {Primitive classes of algebras with two unary idempotent operations, containing all algebraic categories as full subcategories}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {010}, year = {1969}, pages = {425-445}, zbl = {0206.29904}, mrnumber = {0253969}, language = {en}, url = {http://dml.mathdoc.fr/item/105244} }
Pultr, Aleš; Sichler, Jiří. Primitive classes of algebras with two unary idempotent operations, containing all algebraic categories as full subcategories. Commentationes Mathematicae Universitatis Carolinae, Tome 010 (1969) pp. 425-445. http://gdmltest.u-ga.fr/item/105244/
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