TY  - BOOK
AU  - Lusternik, L.A.
AU  - Sobolev, V.J.
TI  - Elements of functional analysis
T2  - International monographs on advanced mathematics and physics
SN  - 0852265204
U1  - 515.7, 
PY  - 1985///
CY  - Delhi
PB  - Hindustan Pub.
ER  -