Paul Young. Speed-Ups by Changing the Order in which Sets are Enumerated. Theory Comput. Syst., 5(2):148-156, 1971.
@article{Young71a, title = {Speed-Ups by Changing the Order in which Sets are Enumerated}, author = {Paul Young}, year = {1971}, researchr = {https://researchr.org/publication/Young71a}, cites = {0}, citedby = {0}, journal = {Theory Comput. Syst.}, volume = {5}, number = {2}, pages = {148-156}, }