![](/img/cover-not-exists.png)
Hyperbolic Equations and Related Topics || Propagation for the Wave Group of a Positive Subelliptic Second-Order Differential Operator
MELROSE, RichardYear:
1986
Language:
english
DOI:
10.1016/b978-0-12-501658-2.50015-4
File:
PDF, 662 KB
english, 1986