TY  - BOOK
AU  - Appell, Jurgen
AU  - Zabrejko, Peter P.
TI  - NONLINEAR SUPERPOSITION OPERATORS
SN  - 0521361028
U1  - 515.7248 
PY  - 1990///
CY  - Cambridge
PB  - Cambridge Univ. Pr.
KW  - Nonlinear Operators
ER  -