TY  - JOUR
TI  - Hjelmslev Planes Derived from Modular Lattices
JO  - Canadian journal of mathematics
PY  - 1969
SP  - 76
EP  - 83
VL  - 21
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-008-5/
DO  - 10.4153/CJM-1969-008-5
ID  - 10_4153_CJM_1969_008_5
ER  -