TY  - BOOK
AU  - Nagel Alexander
AU  - Stein E M
TI  - Lectures on pseudo-differential operators: regularity theorems and applications to non-elliptic problems
U1  - 515.7242 
PY  - 1979///
CY  - Princeton
PB  - University Press
KW  - Calculus
KW  - Differential operator
ER  -