- Author: Prof. Dr. Jorg Karger Prof. Dr. Douglas M. Ruthven Prof. Doros N. Theodorou(auth.)
- Language: English
- Year: 2012
- Author: Douglas M Ruthven, Shamsuzzaman Farooq, Kent S Knaebel
- Language: English
- Year: 1994
- Author: Douglas Morris Ruthven
- Language: English
- Year: 1984
- Author: Douglas M. Ruthven S. Farooq K. S. Knaebel
- Language: English
- Year: 1993
- Author: Douglas M. Ruthven (auth.) Hellmut G. Karge Jens Weitkamp (eds.)
- Language: English
- Year: 2008
- Author: Douglas M. Ruthven
- Language: English
- Year: 1984