@article{10_21136_CPMF_1904_123973,
     author = {H\"ubner, V\'aclav},
     title = {Kterak lze odvoditi z troj\'uheln{\'\i}ka vzorce pro $\sin(\alpha + \beta), \cos(\alpha + \beta)$},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {335--337},
     publisher = {mathdoc},
     volume = {33},
     number = {3},
     year = {1904},
     doi = {10.21136/CPMF.1904.123973},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1904.123973/}
}