1. How software engineers use documentation: the state of the practice;Lethbridge;IEEE Software,2003
2. Refactoring;Fowler,1999
3. Object-Oriented Metrics in Practice;Lanza,2006
4. The fundamentals of iSPARQL—a virtual triple approach for similarity-based semantic web tasks;Kiefer,2007
5. Adding data mining support to SPARQL via statistical relational learning methods;Kiefer,2008