@article{EUG_1984_4_a51,
     author = {Octave Onicescu},
     title = {\ensuremath{\Pi}\ensuremath{\Upsilon}\ensuremath{\Theta}A\ensuremath{\Gamma}OPA\ensuremath{\Sigma} (572-482)},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {107--123},
     year = {1984},
     volume = {4},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1984_4_a51/}
}