@article{EUG_1985-86_10_a13, author = {M\ensuremath{\iota}\ensuremath{\chi}\ensuremath{\acute\alpha}\ensuremath{\lambda}\ensuremath{\eta}\ensuremath{\varsigma} B\'{o}\ensuremath{\sigma}\ensuremath{\kappa}o\ensuremath{\gamma}\ensuremath{\lambda}o\ensuremath{\upsilon}}, title = {O\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\zeta}o\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\varepsilon}\ensuremath{\varsigma}}, journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}}, pages = {59--71}, year = {1985-86}, volume = {10}, language = {gr}, url = {http://geodesic.mathdoc.fr/item/EUG_1985-86_10_a13/} }