TY  - BOOK
AU  - Lusternik, L. A. and Sobolev, V. J.
AU  - Sobolev, V. J.; jt. auth.
TI  - Elements of functional analysis
T2  - International monographs on Advanced Mathematics and Physics
U1  - 515.7 
PY  - 1974///
CY  - Delhi
PB  - Hindustan
ER  -