@article{PMFA_1969_14_3_a2,
     author = {Vachek, Jaroslav},
     title = {K ot\'azce koordinace v\'yuky matematiky a fyziky na st\v{r}edn{\'\i} \v{s}kole},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {144--148},
     year = {1969},
     volume = {14},
     number = {3},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1969_14_3_a2/}
}