@article{EUG_1988_18_a2,
     author = { },
     title = {\ensuremath{\Delta}\ensuremath{\acute\upsilon}\ensuremath{\nu}\ensuremath{\alpha}\ensuremath{\mu}\ensuremath{\eta} \ensuremath{\sigma}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\varepsilon}\ensuremath{\acute\iota}o\ensuremath{\upsilon} \ensuremath{\pi}\ensuremath{\rho}o\ensuremath{\varsigma} \ensuremath{\kappa}\ensuremath{\acute\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}o \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} \ensuremath{\sigma}\ensuremath{\varphi}\ensuremath{\alpha}\ensuremath{\acute\iota}\ensuremath{\rho}\ensuremath{\alpha}.},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {47--82},
     year = {1988},
     volume = {18},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1988_18_a2/}
}