@article{EUG_1984_4_a130,
     author = {\ensuremath{\Sigma}\ensuremath{\pi}. T\ensuremath{\sigma}\ensuremath{\iota}\ensuremath{\kappa}o\ensuremath{\pi}o\ensuremath{\acute\upsilon}\ensuremath{\lambda}o\ensuremath{\upsilon}},
     title = {O\ensuremath{\iota} \ensuremath{\alpha}\ensuremath{\kappa}\ensuremath{\acute\epsilon}\ensuremath{\rho}\ensuremath{\alpha}\ensuremath{\iota}o\ensuremath{\iota} \ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\mu}o\ensuremath{\acute\iota}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {15--17},
     year = {1984},
     volume = {4},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1984_4_a130/}
}