@article{SF_1997__54_2_135507,
     author = {Y.B. Jun and J. Meng and X.L. Xin},
     title = {On ordered filters of implicative semigroups.},
     journal = {Semigroup forum},
     pages = {75--82},
     publisher = {mathdoc},
     volume = {54},
     number = {2},
     year = {1997},
     zbl = {0862.06005},
     url = {http://geodesic.mathdoc.fr/item/SF_1997__54_2_135507/}
}