@article{MR_1980__17_a13,
     author = {\ensuremath{\Gamma}\ensuremath{\iota}\ensuremath{\acute\omega}\ensuremath{\rho}\ensuremath{\gamma}o\ensuremath{\varsigma}  N. T\ensuremath{\zeta}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\varphi}\ensuremath{\acute\epsilon}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\varsigma}},
     title = {E\ensuremath{\varphi}\ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\mu}o\ensuremath{\gamma}\ensuremath{\acute\epsilon}\ensuremath{\varsigma} \ensuremath{\tau}\ensuremath{\omega}\ensuremath{\nu} {M\ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\kappa}o\ensuremath{\beta}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\nu}\ensuremath{\acute\omega}\ensuremath{\nu}} {A\ensuremath{\lambda}\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\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 = {33-47},
     publisher = {mathdoc},
     volume = {17},
     year = {1980},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1980__17_a13/}
}