TY  - BOOK
AU  - Nikol'Skij, N.K.
TI  - Encyclopaedia of Mathematical Sciences Vol- 19: Functional Analysis -I 
SN  - 3540505849
U1  - 515.7 NIK 
PY  - 1991///
CY  - .- New York 
PB  - : Springer 
KW  - Mathematics
KW  - Encyclopedia
ER  -