@article{EUG_1999_52_a1,
     author = {M. X\ensuremath{\acute\alpha}\ensuremath{\lambda}\ensuremath{\kappa}o\ensuremath{\upsilon} and  A. \ensuremath{\Pi}\ensuremath{\acute\epsilon}\ensuremath{\tau}\ensuremath{\rho}o\ensuremath{\upsilon}},
     title = {A\ensuremath{\xi}\ensuremath{\iota}o\ensuremath{\lambda}\'{o}\ensuremath{\gamma}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\pi}\ensuremath{\alpha}\ensuremath{\iota}\ensuremath{\delta}\ensuremath{\alpha}\ensuremath{\gamma}\ensuremath{\omega}\ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\omega}\ensuremath{\nu} \ensuremath{\sigma}\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\acute\alpha}\ensuremath{\tau}\ensuremath{\omega}\ensuremath{\nu}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {26--38},
     year = {1999},
     volume = {52},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1999_52_a1/}
}