@article{10_21136_CPMF_1903_122561,
     author = {P\'anek, Augustin},
     title = {Geometrick\'e odvozen{\'\i} vzorc\r{u} pro algebraick\'y sou\v{c}et stejnorod\'ych primitivn{\'\i}ch funkc{\'\i} goniometrick\'ych r\r{u}zn\'ych argument\r{u}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {337--342},
     publisher = {mathdoc},
     volume = {32},
     number = {4},
     year = {1903},
     doi = {10.21136/CPMF.1903.122561},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1903.122561/}
}