@article{MR_1980_18_a3,
     author = {\ensuremath{\Delta}\ensuremath{\iota}o\ensuremath{\nu}. I.\ensuremath{\Lambda}\ensuremath{\iota}\ensuremath{\beta}\ensuremath{\acute\epsilon}\ensuremath{\rho}\ensuremath{\eta}},
     title = {\ensuremath{\Delta}\ensuremath{\acute\upsilon}o \ensuremath{\mu}\ensuremath{\varepsilon}\ensuremath{\gamma}\ensuremath{\acute\alpha}\ensuremath{\lambda}\ensuremath{\alpha} \ensuremath{\varepsilon}\ensuremath{\rho}\ensuremath{\omega}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\alpha}.},
     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 = {83--106},
     year = {1980},
     volume = {18},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1980_18_a3/}
}