Normak, P.. "Purity in the category of M-sets.." Semigroup forum 20 (1980): 157-170. <http://eudml.org/doc/134412>.
@article{Normak1980, author = {Normak, P.}, journal = {Semigroup forum}, keywords = {pure extensions; semiautomata; injective envelope; left M-sets; absolutely pure; left ideals; semilattice of groups; right M-sets}, pages = {157-170}, title = {Purity in the category of M-sets.}, url = {http://eudml.org/doc/134412}, volume = {20}, year = {1980}, }
TY - JOUR AU - Normak, P. TI - Purity in the category of M-sets. JO - Semigroup forum PY - 1980 VL - 20 SP - 157 EP - 170 KW - pure extensions; semiautomata; injective envelope; left M-sets; absolutely pure; left ideals; semilattice of groups; right M-sets UR - http://eudml.org/doc/134412 ER -
