@article{CMH_1970__45_139438,
     author = {Hans Werner Schuster},
     title = {Infinitesimale {Erweiterungen} komplexer {R\"aume.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {265--286},
     publisher = {mathdoc},
     volume = {45},
     year = {1970},
     url = {http://geodesic.mathdoc.fr/item/CMH_1970__45_139438/}
}