@article{MR_1975_2_a106,
     author = {B. \ensuremath{\Pi}o\ensuremath{\lambda}\ensuremath{\upsilon}\ensuremath{\delta}o\ensuremath{\acute\upsilon}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {\ensuremath{\Pi}\ensuremath{\rho}\ensuremath{\acute\alpha}\ensuremath{\xi}\ensuremath{\varepsilon}\ensuremath{\iota}\ensuremath{\varsigma} \ensuremath{\mu}\ensuremath{\varepsilon} \ensuremath{\pi}\ensuremath{\rho}o\ensuremath{\sigma}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\mu}\ensuremath{\acute\epsilon}\ensuremath{\nu}o\ensuremath{\upsilon}\ensuremath{\varsigma} \ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\mu}o\ensuremath{\acute\upsilon}\ensuremath{\varsigma} {(\ensuremath{\Delta}\ensuremath{\eta}\ensuremath{\lambda}\ensuremath{\alpha}\ensuremath{\delta}\ensuremath{\acute\eta}} \ensuremath{\theta}\ensuremath{\varepsilon}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}o\ensuremath{\acute\upsilon}\ensuremath{\varsigma} \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} \ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\nu}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}o\ensuremath{\acute\upsilon}\ensuremath{\varsigma} \ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\mu}o\ensuremath{\acute\upsilon}\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 = {17--21},
     year = {1975},
     volume = {2},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1975_2_a106/}
}