@article{MR_1992__39_a10,
     author = {\ensuremath{\Theta}. Ko\ensuremath{\mu}\ensuremath{\pi}\ensuremath{\iota}\ensuremath{\lambda}\ensuremath{\acute\alpha}\ensuremath{\kappa}o\ensuremath{\varsigma} and  J. Garofalo and  B. B\ensuremath{\alpha}\ensuremath{\lambda}\ensuremath{\acute\alpha}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {O\ensuremath{\iota} \ensuremath{\pi}\ensuremath{\varepsilon}\ensuremath{\pi}o\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\acute\eta}\ensuremath{\sigma}\ensuremath{\varepsilon}\ensuremath{\iota}\ensuremath{\varsigma} \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} \ensuremath{\pi}\ensuremath{\omega}\ensuremath{\varsigma} \ensuremath{\alpha}\ensuremath{\upsilon}\ensuremath{\tau}\ensuremath{\acute\epsilon}\ensuremath{\varsigma} \ensuremath{\varepsilon}\ensuremath{\pi}\ensuremath{\eta}\ensuremath{\rho}\ensuremath{\varepsilon}\ensuremath{\acute\alpha}\ensuremath{\zeta}o\ensuremath{\upsilon}\ensuremath{\nu} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\nu} \ensuremath{\varepsilon}\ensuremath{\pi}\ensuremath{\acute\iota}\ensuremath{\delta}o\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\alpha} {M\ensuremath{\alpha}\ensuremath{\theta}\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 = {103-109},
     publisher = {mathdoc},
     volume = {39},
     year = {1992},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1992__39_a10/}
}