@article{MR_1979_14_a34,
     author = {N. K\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\acute\alpha}\ensuremath{\nu}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {M\ensuremath{\iota}\ensuremath{\alpha} {\ensuremath{\Pi}\ensuremath{\varepsilon}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\pi}\ensuremath{\tau}\ensuremath{\omega}\ensuremath{\sigma}\ensuremath{\eta}} {I\ensuremath{\sigma}\ensuremath{\tau}o\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\varsigma}} {\ensuremath{\Sigma}\ensuremath{\acute\upsilon}\ensuremath{\gamma}\ensuremath{\chi}\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\eta}\ensuremath{\varsigma}} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\alpha} {\ensuremath{\Sigma}\ensuremath{\chi}o\ensuremath{\lambda}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\alpha}} {B\ensuremath{\iota}\ensuremath{\beta}\ensuremath{\lambda}\ensuremath{\acute\iota}\ensuremath{\alpha}} {\ensuremath{\Gamma}\ensuremath{\varepsilon}\ensuremath{\omega}\ensuremath{\mu}\ensuremath{\varepsilon}\ensuremath{\tau}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\alpha}\ensuremath{\varsigma}.}},
     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 = {71--73},
     year = {1979},
     volume = {14},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1979_14_a34/}
}