Abdulmajid Mukhtar Afat, Using ε Value in Describe Regular Languages by Using Finite Automata, Operation on Languages and the Changing Algorithm Implementation. journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. February 2019, vol. 147(3). 153 - 157 [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10010172.