Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{UM_1997__5_1_a1, author = {Leischner, Pavel}, title = {Troj\'uheln{\'\i}ky a posloupnosti (1)}, journal = {U\v{c}itel matematiky}, pages = {7--13}, publisher = {mathdoc}, volume = {05}, number = {1}, year = {1997}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/UM_1997__5_1_a1/} }
Leischner, Pavel. Trojúhelníky a posloupnosti (1). Učitel matematiky, Tome 05 (1997) no. 1, pp. 7-13. http://geodesic.mathdoc.fr/item/UM_1997__5_1_a1/