Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{PMFA_1995__40_4_a3, author = {Jan\'a\v{c}kov\'a, Alena}, title = {Zem\v{e} je velik\'y magnet}, journal = {Pokroky matematiky, fyziky a astronomie}, pages = {192--197}, publisher = {mathdoc}, volume = {40}, number = {4}, year = {1995}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/PMFA_1995__40_4_a3/} }
Janáčková, Alena. Země je veliký magnet. Pokroky matematiky, fyziky a astronomie, Tome 40 (1995) no. 4, pp. 192-197. http://geodesic.mathdoc.fr/item/PMFA_1995__40_4_a3/