@article{10_4064_sm_29_1_1_4,
     author = {Donald Solomon},
     title = {On differentiability of vector-valued functions of a real variable},
     journal = {Studia Mathematica},
     pages = {1--4},
     publisher = {mathdoc},
     volume = {29},
     number = {1},
     year = {1967},
     doi = {10.4064/sm-29-1-1-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-29-1-1-4/}
}