@article{DEME_1996__38_a20,
     author = {Constantinos N. Yatras},
     title = {Characteristic of {M-polysymmetrical} {Hyperrings} and some properties of {M-Polysymmetrical} {Hyperrings} with {Unity}},
     journal = {\ensuremath{\Delta}\ensuremath{\varepsilon}\ensuremath{\lambda}\ensuremath{\tau}\ensuremath{\acute\iota}o \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} E\ensuremath{\lambda}\ensuremath{\lambda}\ensuremath{\eta}\ensuremath{\nu}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\varsigma} M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\varsigma} E\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\iota}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\alpha}\ensuremath{\varsigma}
},
     pages = {115-125},
     publisher = {mathdoc},
     volume = {38},
     year = {1996},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/DEME_1996__38_a20/}
}