@article{GDZPPN002076764, title = {On (m,n)-ideals in subcommutative semigroups.}, journal = {Elemente der Mathematik}, volume = {24}, year = {1969}, pages = {39-40}, zbl = {0172.02403}, url = {http://dml.mathdoc.fr/item/GDZPPN002076764} }
Lajos, S. On (m,n)-ideals in subcommutative semigroups.. Elemente der Mathematik, Tome 24 (1969) pp. 39-40. http://gdmltest.u-ga.fr/item/GDZPPN002076764/