@article{GDZPPN001252232, title = {Power series developments in lattice ordered semigroups.}, journal = {Semigroup forum}, volume = {14}, year = {1977}, pages = {51-60}, zbl = {0373.06009}, url = {http://dml.mathdoc.fr/item/GDZPPN001252232} }
Behrens, E.A. Power series developments in lattice ordered semigroups.. Semigroup forum, Tome 14 (1977) pp. 51-60. http://gdmltest.u-ga.fr/item/GDZPPN001252232/