@article{10_21136_CPMF_1918_124002,
     author = {Kladivo, B.},
     title = {P\v{r}ibli\v{z}n\'y v\'yraz pro $+\sqrt{1+x^2}$ v intervalu od $0$ do $1$},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {17--25},
     publisher = {mathdoc},
     volume = {47},
     number = {1},
     year = {1918},
     doi = {10.21136/CPMF.1918.124002},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1918.124002/}
}