| Original language | English (US) |
|---|---|
| Pages (from-to) | 157-190 |
| Number of pages | 34 |
| Journal | Journal of Differential Equations |
| Volume | 154 |
| Issue number | 1 |
| DOIs | |
| State | Published - May 1 1999 |
Bibliographical note
Funding Information:This research is partially supported by the National Science Foundation. We thank the referee for his her helpful comments.