1. 1
    Published 1985
    ...HQ 1236.5 .E85 .W872...
    Book
  2. 2
    Published 1988
    ...HQ 1121 .R438...
    Conference Proceeding Book
  3. 3
    Published 2000
    ...HQ 1236.5 .P16 .S471 2000...
    Conference Proceeding Book