| 1994 | ||
|---|---|---|
| 2 | June P. Silvester, Michael T. Genuardi, Paul H. Klingbiel: Machine-Aided Indexing at NASA. Inf. Process. Manage. 30(5): 631-646 (1994) | |
| 1993 | ||
| 1 | June P. Silvester, Paul H. Klingbiel: An Operational System for Subject Switching Between Controlled Vocabularies. Inf. Process. Manage. 29(1): 47-60 (1993) | |
| 1 | Michael T. Genuardi | [2] |
| 2 | Paul H. Klingbiel | [1] [2] |