The target resource for this PURL can no longer be traced. The following is a list of the targets this PURL was previously assigned to.
| Timestamp | Target URL | Note |
|---|---|---|
| 01/14/16 14:18:13 | http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20150022129.pdf | |
| 01/14/16 14:26:39 | http://permanent.access.gpo.gov/gpo64656/20150022129.pdf | |
| 03/19/18 07:46:40 | https://purl.fdlp.gov/history/GPO/gpo64656 | |
| 03/19/18 08:27:53 | https://purl.fdlp.gov/history/GPO/gpo64656 | Publication withdrawn at the the request of NASA. |