- Author: Jens Erik Fenstad Per-Kristian Halvorsen Tore Langholm Johan Van Benthem (auth.)
- Language: English
- Year: 1987
- Author: Jens Erik Fenstad
- Language: English
- Year: 2018
- Author: Sergio Albeverio Jens Erik Fenstad Raphael Høegh-Krohn Tom Lindstrøm
- Language: English
- Year: 1986
- Author: Jens Erik Fenstad et al
- Language: English
- Year: 1978
- Author: Jens Erik Fenstad Ivan T. Frolov Risto Hilpinen (eds.)
- Language: English
- Year: 1989
- Author: Sergio Albeverio Jens Erik Fenstad Raphael Høegh-Krohn Tom Lindstrøm
- Language: English
- Year: 1986
- Author: Sergio Albeverio, Jens Erik Fenstad, Raphael Høegh-Krohn, Tom Lindstrøm
- Language: English
- Year: 1986