@article{EUG_1984_4_a156,
     author = {N. X\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {O\ensuremath{\iota} \ensuremath{\eta}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\kappa}\ensuremath{\tau}\ensuremath{\rho}o\ensuremath{\nu}\ensuremath{\iota}\ensuremath{\kappa}o\ensuremath{\acute\iota} {\ensuremath{\Upsilon}\ensuremath{\pi}o\ensuremath{\lambda}o\ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\acute\epsilon}\ensuremath{\varsigma}}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {7--9},
     year = {1984},
     volume = {4},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1984_4_a156/}
}