David Howard. Determining membership with 2 simultaneous queries. Theoretical Computer Science, 543:112-119, 2014. [doi]
@article{Howard14-0, title = {Determining membership with 2 simultaneous queries}, author = {David Howard}, year = {2014}, doi = {10.1016/j.tcs.2014.05.020}, url = {http://dx.doi.org/10.1016/j.tcs.2014.05.020}, researchr = {https://researchr.org/publication/Howard14-0}, cites = {0}, citedby = {0}, journal = {Theoretical Computer Science}, volume = {543}, pages = {112-119}, }