@article{MR_1976__4_a16,
     author = {N\ensuremath{\acute\iota}\ensuremath{\kappa}o\ensuremath{\varsigma} X\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {\ensuremath{\Pi}o\ensuremath{\sigma}\ensuremath{\acute\alpha} \ensuremath{\alpha}\ensuremath{\nu}\ensuremath{\acute\alpha}\ensuremath{\lambda}o\ensuremath{\gamma}\ensuremath{\alpha} \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} \ensuremath{\alpha}\ensuremath{\nu}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\rho}\'{o}\ensuremath{\varphi}\ensuremath{\omega}\ensuremath{\varsigma} \ensuremath{\alpha}\ensuremath{\nu}\ensuremath{\acute\alpha}\ensuremath{\lambda}o\ensuremath{\gamma}\ensuremath{\alpha}.},
     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 = {20-23},
     publisher = {mathdoc},
     volume = {4},
     year = {1976},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1976__4_a16/}
}