@article{FORUM_1995__7_1_186422,
     author = {Heinz Leutwiler},
     title = {More on modified quaternionic analysis in {R3.}},
     journal = {Forum mathematicum},
     pages = {279--306},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {1995},
     zbl = {0835.30036},
     url = {http://geodesic.mathdoc.fr/item/FORUM_1995__7_1_186422/}
}