@article{CLTM_1975_1975_1_a11,
     author = {Wehrlin, Martin},
     title = {Axiomatische differentialrechnung.},
     journal = {Collectanea mathematica},
     pages = {157-173},
     publisher = {mathdoc},
     volume = {26},
     number = {2},
     year = {1975},
     zbl = {0335.58007},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1975_1975_1_a11/}
}