Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{PMFA_1969__14_1_a5, author = {\v{S}irok\'y, Jarom{\'\i}r}, title = {Nov\'e u\v{c}ebn{\'\i} pl\'any astronomie v {PLR,} {SSSR} a {NDR}}, journal = {Pokroky matematiky, fyziky a astronomie}, pages = {53--55}, publisher = {mathdoc}, volume = {14}, number = {1}, year = {1969}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/PMFA_1969__14_1_a5/} }
Široký, Jaromír. Nové učební plány astronomie v PLR, SSSR a NDR. Pokroky matematiky, fyziky a astronomie, Tome 14 (1969) no. 1, pp. 53-55. http://geodesic.mathdoc.fr/item/PMFA_1969__14_1_a5/