TY  - JOUR
AU  - Lorimer, J. W.
TI  - Dual Numbers and Topological Hjelmslev Planes
JO  - Canadian mathematical bulletin
PY  - 1983
SP  - 297
EP  - 302
VL  - 26
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1983-048-6/
DO  - 10.4153/CMB-1983-048-6
ID  - 10_4153_CMB_1983_048_6
ER  -