@article{EUG_1984_4_a116, author = {X. \ensuremath{\Delta}\ensuremath{\acute\alpha}\ensuremath{\tau}\ensuremath{\sigma}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\varsigma}}, title = {H \ensuremath{\chi}\ensuremath{\rho}\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\acute\eta} \ensuremath{\tau}o\ensuremath{\mu}\ensuremath{\acute\eta}}, journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}}, pages = {8--10}, year = {1984}, volume = {4}, language = {gr}, url = {http://geodesic.mathdoc.fr/item/EUG_1984_4_a116/} }