- Author: Svein Stølen Tor Grande
- Language: English
- Year: 2004
- Author: Duncan Shaw
- Language: English
- Year: 1992
- Author: Tsetska Radeva
- Language: English
- Year: 2001
- Author: Richard Pashley Marilyn Karaman
- Language: English
- Year: 2004
- Author: D. E. Packham
- Language: English
- Year: 2005
- Author: Krister Holmberg
- Language: English
- Year: 2002
- Author: Ken A. Dill Sarina Bromberg
- Language: English
- Year: 2002
- Author: P.L. Hammer E.L. Johnson B.H. Korte and G.L. Nemhauser (Eds.)
- Language: English
- Year: 1977
- Author: B. Alspach P. Hell and D.J. Miller (Eds.)
- Language: English
- Year: 1978
- Author: Gert Due Billing
- Language: English
- Year: 2000