@article{EMJ_2017_8_4_a7,
     author = {S. Omidi and B. Davvaz},
     title = {Bi-$\Gamma$-hyperideals and {Green's} relations in ordered $\gamma$-semihypergroups},
     journal = {Eurasian mathematical journal},
     pages = {63--73},
     publisher = {mathdoc},
     volume = {8},
     number = {4},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2017_8_4_a7/}
}