@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/