V. Bozhikova, и M. Stoeva. Proceedings of the 11th International Conference on Computer Systems and Technologies and Workshop for PhD Students in Computing on International Conference on Computer Systems and Technologies, стр. 119--124. New York, NY, USA, ACM, (2010)
A. Lucia, E. Pompella, и S. Stefanucci. Proceedings of the 14th international conference on Software engineering and knowledge engineering, стр. 409--416. New York, NY, USA, ACM, (2002)