@article{MR_1981_21_a16,
     author = {M\ensuremath{\iota}\ensuremath{\chi}\ensuremath{\alpha}\ensuremath{\acute\eta}\ensuremath{\lambda}. K. K\ensuremath{\omega}\ensuremath{\beta}\ensuremath{\alpha}\ensuremath{\acute\iota}o\ensuremath{\varsigma}},
     title = {H \ensuremath{\varepsilon}\ensuremath{\iota}\ensuremath{\varsigma} \ensuremath{\acute\alpha}\ensuremath{\tau}o\ensuremath{\pi}o\ensuremath{\nu} \ensuremath{\alpha}\ensuremath{\pi}\ensuremath{\alpha}\ensuremath{\gamma}\ensuremath{\omega}\ensuremath{\gamma}\ensuremath{\acute\eta}.},
     journal = {M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta} E\ensuremath{\pi}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\varepsilon}\ensuremath{\acute\omega}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta}},
     pages = {65--94},
     year = {1981},
     volume = {21},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1981_21_a16/}
}