Bahareh Afshari, George Barmpalias, S. Barry Cooper, Frank Stephan. Post s Programme for the Ershov Hierarchy. Journal of Logic and Computation, 17(6):1025-1040, 2007. [doi]
@article{AfshariBCS07,
title = {Post s Programme for the Ershov Hierarchy},
author = {Bahareh Afshari and George Barmpalias and S. Barry Cooper and Frank Stephan},
year = {2007},
doi = {10.1093/logcom/exm032},
url = {http://dx.doi.org/10.1093/logcom/exm032},
researchr = {https://researchr.org/publication/AfshariBCS07},
cites = {0},
citedby = {0},
journal = {Journal of Logic and Computation},
volume = {17},
number = {6},
pages = {1025-1040},
}