Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{UM_1993__1_4_a5, author = {Hejn\'y, M.}, title = {The method of suplementing a picture by drawing}, journal = {U\v{c}itel matematiky}, pages = {8--15}, publisher = {mathdoc}, volume = {01}, number = {4}, year = {1993}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/UM_1993__1_4_a5/} }
Hejný, M. The method of suplementing a picture by drawing. Učitel matematiky, Tome 01 (1993) no. 4, pp. 8-15. http://geodesic.mathdoc.fr/item/UM_1993__1_4_a5/