@article{EUG_1984_4_a66,
     author = {M. \ensuremath{\Lambda}\ensuremath{\acute\alpha}\ensuremath{\mu}\ensuremath{\pi}\ensuremath{\rho}o\ensuremath{\upsilon} and  M. K\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\sigma}o\ensuremath{\pi}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\nu}\ensuremath{\acute\alpha}\ensuremath{\kappa}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {O {E\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma}} {\ensuremath{\Gamma}΄} \ensuremath{\sigma}\ensuremath{\alpha}\ensuremath{\varsigma} \ensuremath{\alpha}\ensuremath{\pi}\ensuremath{\alpha}\ensuremath{\nu}\ensuremath{\tau}\ensuremath{\acute\alpha}.},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {120--128},
     year = {1984},
     volume = {4},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1984_4_a66/}
}