Edward L. Robertson. Complexity Classes of Partial Recursive Functions. J. Comput. Syst. Sci., 9(1):69-87, 1974.
@article{Robertson74-0, title = {Complexity Classes of Partial Recursive Functions}, author = {Edward L. Robertson}, year = {1974}, researchr = {https://researchr.org/publication/Robertson74-0}, cites = {0}, citedby = {0}, journal = {J. Comput. Syst. Sci.}, volume = {9}, number = {1}, pages = {69-87}, }