@article{MR_1975_3_a60,
     author = {\ensuremath{\Delta}.K.  \ensuremath{\Omega}\ensuremath{\rho}\ensuremath{\alpha}\ensuremath{\iota}\'{o}\ensuremath{\pi}o\ensuremath{\upsilon}\ensuremath{\lambda}o\ensuremath{\varsigma}},
     title = {To {E\ensuremath{\kappa}\ensuremath{\pi}\ensuremath{\alpha}\ensuremath{\iota}\ensuremath{\delta}\ensuremath{\varepsilon}\ensuremath{\upsilon}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\'{o}} \ensuremath{\sigma}\ensuremath{\acute\upsilon}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} {\ensuremath{\Lambda}.} {\ensuremath{\Delta}.} {Bo\ensuremath{\upsilon}\ensuremath{\lambda}\ensuremath{\gamma}\ensuremath{\alpha}\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 = {80--87},
     year = {1975},
     volume = {3},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1975_3_a60/}
}