TY  - JOUR
AU  - Halberstam, H.
AU  - Laxton, R. R.
TI  - Perfect difference sets
JO  - Glasgow mathematical journal
PY  - 1964
SP  - 177
EP  - 184
VL  - 6
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S2040618500034985/
DO  - 10.1017/S2040618500034985
ID  - 10_1017_S2040618500034985
ER  -