@article{MR_1992_39_a19,
     author = {\ensuremath{\Gamma}. \ensuremath{\Delta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\acute\alpha}\ensuremath{\kappa}o\ensuremath{\varsigma}},
     title = {H {\ensuremath{\Sigma}\ensuremath{\upsilon}\ensuremath{\mu}\ensuremath{\beta}o\ensuremath{\lambda}\ensuremath{\acute\eta}} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} {E\ensuremath{\kappa}\ensuremath{\pi}\ensuremath{\alpha}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\varepsilon}\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\eta}\ensuremath{\varsigma}} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\nu} {O\ensuremath{\iota}\ensuremath{\kappa}o\ensuremath{\nu}o\ensuremath{\mu}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}} {A\ensuremath{\nu}\ensuremath{\acute\alpha}\ensuremath{\pi}\ensuremath{\tau}\ensuremath{\upsilon}\ensuremath{\xi}\ensuremath{\eta}}},
     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 = {36--50},
     year = {1992},
     volume = {39},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1992_39_a19/}
}