Søren Riis. Count(q) Does Not Imply Count(p). Annals of Pure and Applied Logic, 90(1-3):1-56, 1997.
@article{Riis97:0, title = {Count(q) Does Not Imply Count(p)}, author = {Søren Riis}, year = {1997}, researchr = {https://researchr.org/publication/Riis97%3A0}, cites = {0}, citedby = {0}, journal = {Annals of Pure and Applied Logic}, volume = {90}, number = {1-3}, pages = {1-56}, }