Toshio Yasui, Shuzo Yajima. Two-State Two-Symbol Probabilistic Automata. Inf. Comput., 16(3):203-224, May 1970.
@article{YasuiY70, title = {Two-State Two-Symbol Probabilistic Automata}, author = {Toshio Yasui and Shuzo Yajima}, year = {1970}, month = {May}, researchr = {https://researchr.org/publication/YasuiY70}, cites = {0}, citedby = {0}, journal = {Inf. Comput.}, volume = {16}, number = {3}, pages = {203-224}, }