TY  - BOOK
AU  - Apostol C Ed.
AU  -  Douglas R G Ed.
AU  -  Nagy B Ed.
TI  - Conference on in variant subspaces and REF topics
U1  - B48, M2 
PY  - 1982///
CY  - Basel
PB  - Birkhausern Verlag        
KW  -  Operator theory
KW  - Operational
ER  -