TY  - BOOK
AU  - Ziemer, William P
TI  - Weakly Differentiable Functions: Sobolev Spaces and Functions of Bounded Variation
SN  - 9780387970172
U1  - 515.73ZIE/W 
PY  - 1989///
CY  - New York
PB  - Springer
KW  - Differentiable Functions
ER  -