Pham Ba Quang and Nguyen Tien Dat and Huynh Quyet Thang, Investigate the Relation between the Correctness and the Number of Versions of Fault Tolerant Software System . journal = {International Journal of Computer and Systems Engineering}, [online]. World Academy of Science, Engineering and Technology. March 2007, vol. 3(3). 732 - 737 [viewed 18 April 2024]. Available from: https://publications.waset.org/pdf/456.