Voir la notice de l'article provenant de la source Hellenic Digital Mathematics Library
@article{EU_1975-1976__2_a48, author = {B. E\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\theta}\'{o}\ensuremath{\pi}o\ensuremath{\upsilon}\ensuremath{\lambda}o\ensuremath{\varsigma} and B. \ensuremath{\Gamma}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\nu}\ensuremath{\nu}\ensuremath{\alpha}\ensuremath{\kappa}\'{o}\ensuremath{\pi}o\ensuremath{\upsilon}\ensuremath{\lambda}o\ensuremath{\varsigma}}, title = {T\ensuremath{\alpha} \ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\alpha} \ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\varsigma} \ensuremath{\delta}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\kappa}\ensuremath{\varepsilon}\ensuremath{\delta}\ensuremath{\acute\alpha}\ensuremath{\zeta}o\ensuremath{\upsilon}\ensuremath{\nu}....}, journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} }, pages = {77-78}, publisher = {mathdoc}, volume = {2}, year = {1975-1976}, language = {gr}, url = {http://geodesic.mathdoc.fr/item/EU_1975-1976__2_a48/} }
Β. Ευσταθόπουλος; Β. Γιαννακόπουλος. Τα μαθηματικά μας διασκεδάζουν..... Ευκλείδης , Tome 2 (1975-1976), p. 77-78. http://geodesic.mathdoc.fr/item/EU_1975-1976__2_a48/