- Author: Robert R. Phelps
- Language: English
- Year: 1993
- Author: Luigi Paganetto Edmund S. Phelps
- Language: English
- Year: 2002
- Author: Elke Phelps Paul Jackson
- Language: English
- Year: 2006
- Author: Paul L Della Maggiora Christopher E. Elliott James M. Thompson Robert L. Pavone Jr. Kent J. Phelps
- Language: English
- Year: 2000
- Author: Фелпс Р. (Phelps)
- Language: Русский
- Year: 1968
- Author: Robert R. Phelps (auth.)
- Language: English
- Year: 1989
- Author: Robert R. Phelps (eds.)
- Language: English
- Year: 2001