Mark W. Krentel. Generalizations of Opt P to the Polynomial Hierarchy. Theoretical Computer Science, 97(2):183-198, 1992.
@article{Krentel92, title = {Generalizations of Opt P to the Polynomial Hierarchy}, author = {Mark W. Krentel}, year = {1992}, researchr = {https://researchr.org/publication/Krentel92}, cites = {0}, citedby = {0}, journal = {Theoretical Computer Science}, volume = {97}, number = {2}, pages = {183-198}, }