TY  - BOOK
AU  - Wallis W D
AU  - Street A P
AU  - Wallis J S
TI  - Combinatorics: room squares,sum-free sets,hadamard matrices
SN  - 3-540-06035-9
U1  - 511.6 
PY  - 1972///
CY  - Berlin
PB  - Springer-Verlag
KW  - Combinatorial analysis
ER  -