@article{10_4064_sm8578_7_2016,
     author = {J. Marshall Ash and Stefan Catoiu},
     title = {Multidimensional {Riemann} derivatives},
     journal = {Studia Mathematica},
     pages = {87--100},
     publisher = {mathdoc},
     volume = {235},
     number = {1},
     year = {2016},
     doi = {10.4064/sm8578-7-2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm8578-7-2016/}
}