Voir la notice de l'article provenant de la source Hellenic Digital Mathematics Library
@article{EU_1975-1976__4_a132, author = {\ensuremath{\Pi}. K\ensuremath{\upsilon}\ensuremath{\rho}\ensuremath{\acute\alpha}\ensuremath{\nu}\ensuremath{\alpha}\ensuremath{\varsigma}}, title = {M\ensuremath{\acute\epsilon}\ensuremath{\tau}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\kappa}\ensuremath{\acute\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}o\ensuremath{\upsilon} - {A\ensuremath{\sigma}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\sigma}\ensuremath{\varepsilon}\ensuremath{\iota}\ensuremath{\varsigma}}}, journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} }, pages = {20-20}, publisher = {mathdoc}, volume = {4}, year = {1975-1976}, language = {gr}, url = {http://geodesic.mathdoc.fr/item/EU_1975-1976__4_a132/} }
Π. Κυράνας. Μέτρηση κύκλου - Ασκήσεις. Ευκλείδης , Tome 4 (1975-1976), p. 20. http://geodesic.mathdoc.fr/item/EU_1975-1976__4_a132/