@article{MAN_1972__196_162260,
     author = {Richard Delanghe},
     title = {On the {Singularities} of {Functions} with {Values} in a {Clifford} {Algebra.}},
     journal = {Mathematische Annalen},
     pages = {293--319},
     publisher = {mathdoc},
     volume = {196},
     year = {1972},
     zbl = {0236.30050},
     url = {http://geodesic.mathdoc.fr/item/MAN_1972__196_162260/}
}