TY  - BOOK
AU  - Van Leijenhorst,D.C.
TI  - A combinatorial proof of a theorem by F. A. Grunbaum on sets of differences
T2  - Report 7920
AV  - QA3.R46 no.7920 
PY  - 1979///
CY  - Nijmegen
PB  -  : Catholic University, Department of Mathematics
KW  - Combinatorial analysis
KW  - Combinatorial set theory
KW  - Difference sets
ER  -