TY  - JOUR
AU  - Hanssens, G.
AU  - Van Maldeghem, H.
TI  - A universal construction for projective Hjelmslev planes of level $n$
JO  - Compositio Mathematica
PY  - 1989
SP  - 285
EP  - 294
VL  - 71
IS  - 3
PB  - Kluwer Academic Publishers
UR  - http://www.numdam.org/item/CM_1989__71_3_285_0/
LA  - en
ID  - CM_1989__71_3_285_0
ER  -