@article{MR_2003_60_a3,
     author = { },
     title = {O\ensuremath{\iota} \ensuremath{\varepsilon}\ensuremath{\pi}\ensuremath{\tau}\ensuremath{\acute\alpha} o\ensuremath{\mu}\ensuremath{\acute\alpha}\ensuremath{\delta}\ensuremath{\varepsilon}\ensuremath{\varsigma} \ensuremath{\sigma}\ensuremath{\upsilon}\ensuremath{\mu}\ensuremath{\mu}\ensuremath{\varepsilon}\ensuremath{\tau}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\alpha}\ensuremath{\varsigma} \ensuremath{\tau}\ensuremath{\omega}\ensuremath{\nu} \ensuremath{\delta}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\kappa}o\ensuremath{\sigma}\ensuremath{\mu}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\omega}\ensuremath{\nu} \ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\iota}\ensuremath{\nu}\ensuremath{\iota}\ensuremath{\acute\omega}\ensuremath{\nu}},
     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 = {41--55},
     year = {2003},
     volume = {60},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_2003_60_a3/}
}