TY  - BOOK
AU  - Ziemer, William P.,
TI  - Weakly differentiable functions: Sobolev spaces and functions of bounded variation 
T2  - Graduate texts in mathematics
SN  - 0387970177
AV  - QA323 Z54
PY  - 1989///
CY  - New York
PB  - Springer Verlag
KW  - Espacios de Sobolev
KW  - Funciones de variación acotada
ER  -