@article{DMGAA_2012_32_1_a2,
     author = {Faisal, - and Yaqoob, Naveed and Saeid, Arsham},
     title = {Some results in bipolar-valued fuzzy ordered {AG-groupoids}},
     journal = {Discussiones Mathematicae. General Algebra and Applications},
     pages = {55--76},
     publisher = {mathdoc},
     volume = {32},
     number = {1},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGAA_2012_32_1_a2/}
}