Yuji Takada. A Hierarchy of Language Families Learnable by Regular Language Learning. Inf. Comput., 123(1):138-145, 1995.
@article{Takada95:0, title = {A Hierarchy of Language Families Learnable by Regular Language Learning}, author = {Yuji Takada}, year = {1995}, researchr = {https://researchr.org/publication/Takada95%3A0}, cites = {0}, citedby = {0}, journal = {Inf. Comput.}, volume = {123}, number = {1}, pages = {138-145}, }