@article{MOMA_1990__110_3-4_178492,
     author = {Josef Mattes},
     title = {Some {Set-Theoretical} {Aspects} of {Differentation} {Theory.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {137--144},
     publisher = {mathdoc},
     volume = {110},
     number = {3-4},
     year = {1990},
     zbl = {0727.46022},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1990__110_3-4_178492/}
}