TY  - JOUR
AU  - Piper, Fred
TI  - On relative difference sets and projective planes
JO  - Glasgow mathematical journal
PY  - 1974
SP  - 150
EP  - 154
VL  - 15
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500002329/
DO  - 10.1017/S0017089500002329
ID  - 10_1017_S0017089500002329
ER  -