L. W. Smith, S. S. Yau. Generational of regular expressions for automata by the integral of regular expressions. Comput. J., 15(3):222-228, 1972. [doi]
@article{SmithY72, title = {Generational of regular expressions for automata by the integral of regular expressions}, author = {L. W. Smith and S. S. Yau}, year = {1972}, url = {http://www3.oup.co.uk/computer_journal/hdb/Volume_15/Issue_03/150222.sgm.abs.html}, researchr = {https://researchr.org/publication/SmithY72}, cites = {0}, citedby = {0}, journal = {Comput. J.}, volume = {15}, number = {3}, pages = {222-228}, }