@article{EUA_1989-1990__3_a109,
     author = {\ensuremath{\Phi}. K\ensuremath{\alpha}\ensuremath{\beta}o\ensuremath{\upsilon}\ensuremath{\kappa}\'{o}\ensuremath{\pi}o\ensuremath{\upsilon}\ensuremath{\lambda}o\ensuremath{\varsigma}},
     title = {\ensuremath{\Sigma}\ensuremath{\upsilon}\ensuremath{\nu}\ensuremath{\acute\alpha}\ensuremath{\rho}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta}__},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} A
},
     pages = {33-37},
     publisher = {mathdoc},
     volume = {3},
     year = {1989-1990},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUA_1989-1990__3_a109/}
}