@article{EUG_1984_4_a142, author = {B. B\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\delta}o\ensuremath{\upsilon}\ensuremath{\rho}\ensuremath{\acute\alpha}\ensuremath{\kappa}\ensuremath{\eta}\ensuremath{\varsigma}}, title = {\'{}O\ensuremath{\mu}o\ensuremath{\iota}\ensuremath{\alpha} \ensuremath{\sigma}\ensuremath{\chi}\ensuremath{\acute\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\alpha}}, journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}}, pages = {30--35}, year = {1984}, volume = {4}, language = {gr}, url = {http://geodesic.mathdoc.fr/item/EUG_1984_4_a142/} }