@article{EUG_1999__51_a2,
     author = {\ensuremath{\Theta}. \ensuremath{\Sigma}\ensuremath{\kappa}o\ensuremath{\acute\upsilon}\ensuremath{\rho}\ensuremath{\alpha}\ensuremath{\varsigma}},
     title = {H \ensuremath{\sigma}\ensuremath{\acute\upsilon}\ensuremath{\nu}\ensuremath{\theta}\ensuremath{\varepsilon}\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\tau}\ensuremath{\omega}\ensuremath{\nu} \ensuremath{\alpha}\ensuremath{\nu}\ensuremath{\alpha}\ensuremath{\pi}\ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\acute\alpha}\ensuremath{\sigma}\ensuremath{\varepsilon}\ensuremath{\omega}\ensuremath{\nu} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\nu} \ensuremath{\pi}o\ensuremath{\rho}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\alpha} \ensuremath{\delta}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\mu}\'{o}\ensuremath{\rho}\ensuremath{\varphi}\ensuremath{\omega}\ensuremath{\sigma}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\alpha}\ensuremath{\varphi}\ensuremath{\eta}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\acute\epsilon}\ensuremath{\nu}\ensuremath{\omega}\ensuremath{\nu} \ensuremath{\varepsilon}\ensuremath{\nu}\ensuremath{\nu}o\ensuremath{\iota}\ensuremath{\acute\omega}\ensuremath{\nu}. {H} \ensuremath{\pi}\ensuremath{\varepsilon}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\pi}\ensuremath{\tau}\ensuremath{\omega}\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\sigma}\ensuremath{\upsilon}\ensuremath{\nu}\ensuremath{\acute\alpha}\ensuremath{\rho}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta}\ensuremath{\varsigma} f(x)=ax2 + \ensuremath{\beta}x2 +\ensuremath{\gamma}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}
},
     pages = {45-60},
     publisher = {mathdoc},
     volume = {51},
     year = {1999},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1999__51_a2/}
}