@article{MR_1976_4_a111,
     author = {\ensuremath{\Pi}\ensuremath{\acute\alpha}\ensuremath{\lambda}\ensuremath{\lambda}\ensuremath{\alpha} N\ensuremath{\acute\iota}\ensuremath{\kappa}\ensuremath{\eta} and  \ensuremath{\Pi}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\varphi}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Theta}\ensuremath{\acute\omega}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\varsigma} and  T\ensuremath{\zeta}\ensuremath{\alpha}\ensuremath{\nu}\ensuremath{\acute\alpha}\ensuremath{\kappa}\ensuremath{\eta}\ensuremath{\varsigma} N\ensuremath{\acute\iota}\ensuremath{\kappa}o\ensuremath{\varsigma}},
     title = {\ensuremath{\Gamma}\ensuremath{\iota}\ensuremath{\alpha} \ensuremath{\tau}\ensuremath{\eta} {\ensuremath{\Gamma}} \ensuremath{\tau}\ensuremath{\acute\alpha}\ensuremath{\xi}\ensuremath{\eta} : {K\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\varepsilon}\ensuremath{\tau}\'{o}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\alpha}} \ensuremath{\sigma}\ensuremath{\tau}o \ensuremath{\chi}\ensuremath{\acute\omega}\ensuremath{\rho}o},
     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 = {117--125},
     year = {1976},
     volume = {4},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1976_4_a111/}
}