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- Language: English
- Year: 2014
- Author: Razvan Gelca Titu Andreescu
- Language: English
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- Author: Titu Andreescu Răzvan Gelca (auth.)
- Language: English
- Year: 2000
- Author: Titu Andreescu Zuming Feng (auth.)
- Language: English
- Year: 2004
- Author: Titu Andreescu Zuming Feng (auth.)
- Language: English
- Year: 2003
- Author: Svetoslav Savchev Titu Andreescu
- Language: English
- Year: 2002
- Author: Titu Andreescu Bogdan Enescu (auth.)
- Language: English
- Year: 2012
- Author: Titu Andreescu Răzvan Gelca (auth.)
- Language: English
- Year: 2009
- Author: Titu Andreescu Oleg Mushkarov Luchezar Stoyanov (auth.)
- Language: English
- Year: 2006
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- Language: English
- Year: 2005