TY  - BOOK
AU  - Gramchev, Todor V
AU  - Papivanov, Petar R
TI  - Partial differential equations: approximate solutions in scales of function spaces
T2  - Mathematical research
SN  - 3527401385
U1  - 515.353 
PY  - 2000///
CY  - Berlin
PB  - Wiley-VCH
ER  -