@article{EUG_1993_38_a28,
     author = {  and  Jean-Paul Delahaye},
     title = {H \ensuremath{\varepsilon}\ensuremath{\xi}\ensuremath{\acute\iota}\ensuremath{\sigma}\ensuremath{\omega}\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\tau}o\ensuremath{\upsilon} {CHAITIN:} \ensuremath{\mu}\ensuremath{\iota}\ensuremath{\alpha} \ensuremath{\varepsilon}\ensuremath{\pi}\ensuremath{\acute\epsilon}\ensuremath{\kappa}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\tau}o\ensuremath{\upsilon} \ensuremath{\theta}\ensuremath{\varepsilon}\ensuremath{\omega}\ensuremath{\rho}\ensuremath{\acute\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}o\ensuremath{\varsigma} \ensuremath{\tau}o\ensuremath{\upsilon} {GODEL}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {52--57},
     year = {1993},
     volume = {38},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1993_38_a28/}
}