@article{PPN235181684_0159+dmdlog26, title = {Dually Residuated Lattice Ordered Semigroups.}, journal = {Mathematische Annalen}, volume = {161}, year = {1965}, pages = {105-114}, zbl = {0135.04203}, url = {http://dml.mathdoc.fr/item/PPN235181684_0159+dmdlog26} }
SWAMY, K.L.N. Dually Residuated Lattice Ordered Semigroups.. Mathematische Annalen, Tome 161 (1965) pp. 105-114. http://gdmltest.u-ga.fr/item/PPN235181684_0159+dmdlog26/