@article{EUG_1990_26_a18,
     author = {\ensuremath{\Delta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\acute\eta}\ensuremath{\tau}\ensuremath{\rho}\ensuremath{\eta} I. M\ensuremath{\pi}o\ensuremath{\upsilon}\ensuremath{\nu}\ensuremath{\acute\alpha}\ensuremath{\kappa}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {E\ensuremath{\varphi}\ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\mu}o\ensuremath{\gamma}\ensuremath{\acute\epsilon}\ensuremath{\varsigma} \ensuremath{\tau}o\ensuremath{\upsilon} \ensuremath{\delta}\ensuremath{\varepsilon}\ensuremath{\acute\upsilon}\ensuremath{\tau}\ensuremath{\varepsilon}\ensuremath{\rho}o\ensuremath{\upsilon} \ensuremath{\alpha}\ensuremath{\xi}\ensuremath{\iota}\ensuremath{\acute\omega}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}o\ensuremath{\varsigma} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\gamma}\ensuremath{\rho}\ensuremath{\alpha}\ensuremath{\mu}\ensuremath{\mu}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\varsigma} \ensuremath{\delta}\ensuremath{\iota}\ensuremath{\acute\alpha}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\xi}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\tau}o\ensuremath{\upsilon} {R.}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {122--130},
     year = {1990},
     volume = {26},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1990_26_a18/}
}