@article{GDZPPN002294729,
title = {Dually Residuated Lattice Ordered Semigroups, II.},
journal = {Mathematische Annalen},
volume = {161},
year = {1965},
pages = {64-71},
zbl = {0138.02104},
url = {http://dml.mathdoc.fr/item/GDZPPN002294729}
}
SWAMY, K.L.N. Dually Residuated Lattice Ordered Semigroups, II.. Mathematische Annalen, Tome 161 (1965) pp. 64-71. http://gdmltest.u-ga.fr/item/GDZPPN002294729/