@article{EU_1975-1976_3_a74,
     author = {\ensuremath{\Lambda}. \ensuremath{\Sigma}o\ensuremath{\lambda}\ensuremath{\alpha}\ensuremath{\kappa}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {\ensuremath{\Pi}\ensuremath{\acute\iota}\ensuremath{\nu}\ensuremath{\alpha}\ensuremath{\kappa}\ensuremath{\varepsilon}\ensuremath{\varsigma}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma}},
     pages = {87--89},
     year = {1975-1976},
     volume = {3},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EU_1975-1976_3_a74/}
}