@article{10_21136_CPM_1981_118088,
     author = {Mal\'y, Jan},
     title = {On increment of the tangent argument along a curve},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {186--196},
     publisher = {mathdoc},
     volume = {106},
     number = {2},
     year = {1981},
     doi = {10.21136/CPM.1981.118088},
     mrnumber = {621182},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1981.118088/}
}