TY - BOOK ID - 131947048 TI - Elements of functional analysis AU - Lusternik, L.A. AU - Sobolev, V.J. PY - 1968 PB - New York DB - UniCat KW - Functional analysis UR - https://www.unicat.be/uniCat?func=search&query=sysid:131947048 AB - ER -