@article{MR_1999_51_a4,
     author = {B. \ensuremath{\Sigma}\ensuremath{\acute\alpha}\ensuremath{\lambda}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\varsigma}},
     title = {H o\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\acute\iota}\ensuremath{\alpha} \ensuremath{\tau}\ensuremath{\omega}\ensuremath{\nu} \ensuremath{\pi}\ensuremath{\rho}o\ensuremath{\beta}\ensuremath{\lambda}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\acute\alpha}\ensuremath{\tau}\ensuremath{\omega}\ensuremath{\nu} {\ensuremath{\Gamma}\ensuremath{\varepsilon}\ensuremath{\omega}\ensuremath{\mu}\ensuremath{\varepsilon}\ensuremath{\tau}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\varsigma}} {K\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\kappa}\ensuremath{\varepsilon}\ensuremath{\upsilon}\ensuremath{\acute\eta}\ensuremath{\varsigma}}},
     journal = {M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta} E\ensuremath{\pi}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\varepsilon}\ensuremath{\acute\omega}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta}},
     pages = {84--91},
     year = {1999},
     volume = {51},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1999_51_a4/}
}