@article{EUG_1991_29_a0,
     author = {\ensuremath{\Gamma}. \ensuremath{\Sigma}\ensuremath{\iota}\ensuremath{\gamma}\ensuremath{\acute\alpha}\ensuremath{\lambda}\ensuremath{\alpha}\ensuremath{\varsigma}},
     title = {\ensuremath{\Pi}\ensuremath{\rho}o\ensuremath{\sigma}\ensuremath{\pi}\ensuremath{\acute\alpha}\ensuremath{\theta}\ensuremath{\varepsilon}\ensuremath{\iota}\ensuremath{\alpha} {E\ensuremath{\rho}\ensuremath{\mu}\ensuremath{\eta}\ensuremath{\nu}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\alpha}\ensuremath{\varsigma}} {\ensuremath{\Lambda}\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\acute\omega}\ensuremath{\nu}} \ensuremath{\sigma}\ensuremath{\tau}o\ensuremath{\nu} {A\ensuremath{\lambda}\ensuremath{\gamma}\ensuremath{\varepsilon}\ensuremath{\beta}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\kappa}\'{o}} {\ensuremath{\Lambda}o\ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\mu}\'{o}}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {102--111},
     year = {1991},
     volume = {29},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1991_29_a0/}
}