Ker-I Ko. Distinguishing Conjunctive and Disjunctive Reducibilities by Sparse Sets. Inf. Comput., 81(1):62-87, April 1989.
@article{Ko89, title = {Distinguishing Conjunctive and Disjunctive Reducibilities by Sparse Sets}, author = {Ker-I Ko}, year = {1989}, month = {April}, researchr = {https://researchr.org/publication/Ko89}, cites = {0}, citedby = {0}, journal = {Inf. Comput.}, volume = {81}, number = {1}, pages = {62-87}, }