@article{DMGAA_2021_41_1_a9,
     author = {Kehayopulu, Niovi},
     title = {From {\ensuremath{\vee}e-Semigroups} to {Hypersemigroups}},
     journal = {Discussiones Mathematicae. General Algebra and Applications},
     pages = {113--126},
     publisher = {mathdoc},
     volume = {41},
     number = {1},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGAA_2021_41_1_a9/}
}