@article{GDZPPN001257056, title = {On chains whose power semigroups are lattices.}, journal = {Semigroup forum}, volume = {30}, year = {1984}, pages = {35-40}, zbl = {0528.06002}, url = {http://dml.mathdoc.fr/item/GDZPPN001257056} }
Tamura, T. On chains whose power semigroups are lattices.. Semigroup forum, Tome 30 (1984) pp. 35-40. http://gdmltest.u-ga.fr/item/GDZPPN001257056/