Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{UM_2012__20_1_a2, author = {Calda, Emil}, title = {O jednom troj\'uheln{\'\i}ku eukleidovsky nesestrojiteln\'em}, journal = {U\v{c}itel matematiky}, pages = {23--25}, publisher = {mathdoc}, volume = {20}, number = {1}, year = {2012}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/UM_2012__20_1_a2/} }
Calda, Emil. O jednom trojúhelníku eukleidovsky nesestrojitelném. Učitel matematiky, Tome 20 (2012) no. 1, pp. 23-25. http://geodesic.mathdoc.fr/item/UM_2012__20_1_a2/