@article{EUG_1984_4_a94,
     author = {B. T\ensuremath{\zeta}\ensuremath{\alpha}\ensuremath{\beta}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\alpha}\ensuremath{\varsigma} and  E. \ensuremath{\Delta}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\beta}\ensuremath{\alpha}\ensuremath{\lambda}\ensuremath{\iota}\ensuremath{\acute\alpha}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {-\ensuremath{\Gamma}\ensuremath{\iota}\ensuremath{\alpha} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\nu} {E΄} \ensuremath{\tau}\ensuremath{\acute\alpha}\ensuremath{\xi}\ensuremath{\eta}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {45--48},
     year = {1984},
     volume = {4},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1984_4_a94/}
}