1. Nor Haniza Sarmin and Fong Wan Heng, Restriction Enzymes in Stricaly Locally Testable Languages and Some Characteristics of Constant and Local, Technical Report of Department of Mathematics, LT/M Bil.6/2006.
2. Nor Haniza Sarmin and Fong Wan Heng, Non Strictly Locally Testable Languages and Molecular Considerations on Splicing Systems, Technical Report of Department of Mathematics, LT/M Bil.7/2006.
3. Nor Haniza Sarmin, Deborah Lim Shin Fei and Fong Wan Heng, Adult and Limit Languages in Splicing Systems, Technical Report of Department of Mathematics, LT/M Bil.03/2007.
4. Nor Haniza Sarmin, Deborah Lim Shin Fei and Fong Wan Heng, Three Variants of Splicing Systems – Head, Paun and Pixton, Technical Report of Department of Mathematics, LT/M Bil.04/2007.
5. Mathuri Selvarajoo, Fong Wan Heng, Nor Haniza Sarmin, Sticker Languages and Their Properties, Technical Report of Department of Mathematics, LT/M BIL.3/2012.