@article{EUA_1989-1990_3_a72,
     author = {\ensuremath{\Pi}. X\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\tau}o\ensuremath{\varphi}\'{o}\ensuremath{\rho}o\ensuremath{\upsilon}},
     title = {\ensuremath{\Sigma}\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\acute\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\alpha} \ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\theta}\ensuremath{\mu}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta}\ensuremath{\varsigma}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} A},
     pages = {83},
     year = {1989-1990},
     volume = {3},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUA_1989-1990_3_a72/}
}