- Author: Claudio Baraldi, Giancarlo Corsi, Elena Esposito, Katherine Walker, Bielefeld University Press, SFB 1288
- Language: English
- Year: 2021
- Author: Peter Petschek, Peter Walker
- Language: English
- Year: 2014
- Author: Peter Petschek, Jessica Read, Peter Walker
- Language: English
- Year: 2012
- Author: Peter Petschek, Peter Walker
- Language: German
- Year: 2012
- Author: Lance Scott Walker, Willie D
- Language: English
- Year: 2019
- Author: Laurence C. Walker
- Language: English
- Year: 2014
- Author: Faruk Sümer, Ahmet E. Uysal, Warren S. Walker
- Language: English
- Year: 2013
- Author: Laurence C. Walker
- Language: English
- Year: 2014
- Author: David W. Walker
- Language: English
- Year: 2015
- Author: James W. St. G. Walker
- Language: English
- Year: 1999