Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{UM_1999__7_3_a3, author = {Zelinka, Bohdan}, title = {\v{C}tvercov\'e matice a jejich \v{c}tverce}, journal = {U\v{c}itel matematiky}, pages = {155--159}, publisher = {mathdoc}, volume = {07}, number = {3}, year = {1999}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/UM_1999__7_3_a3/} }
Zelinka, Bohdan. Čtvercové matice a jejich čtverce. Učitel matematiky, Tome 07 (1999) no. 3, pp. 155-159. http://geodesic.mathdoc.fr/item/UM_1999__7_3_a3/