Original language | English (US) |
---|---|
Pages (from-to) | 449-463 |
Number of pages | 15 |
Journal | Journal of Differential Equations |
Volume | 11 |
Issue number | 3 |
DOIs | |
State | Published - May 1972 |
Bibliographical note
Funding Information:* This research was done while the latter author was visiting at the University of Southern California. It was supported by U.S. Army Contract No. DA-31 124-ARO-D-265 at the University of Southern California and NSF Grant GP-7041 X at the University of Minnesota.