Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_2007_3_a3, author = {N. Kehayopulu and M. Tsingelis}, title = {Semilattice composition of ordered semigroups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {29--37}, publisher = {mathdoc}, number = {3}, year = {2007}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_2007_3_a3/} }
N. Kehayopulu; M. Tsingelis. Semilattice composition of ordered semigroups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (2007), pp. 29-37. http://geodesic.mathdoc.fr/item/IVM_2007_3_a3/