TY  - BOOK
AU  - Kreyszig Erwin
TI  - Introductory functional analysis with applications
U1  - B43, L81;6 
PY  - 1978///
CY  - New York    
PB  -  John Wiley & Sons     
KW  - Functional analysis
N1  - INdex 681-688p
ER  -