Randall Dougherty. Monotone but not Positive Subsets of the Cantor Space. Journal of Symbolic Logic, 52(3):817-818, 1987.
@article{Dougherty87a, title = {Monotone but not Positive Subsets of the Cantor Space}, author = {Randall Dougherty}, year = {1987}, researchr = {https://researchr.org/publication/Dougherty87a}, cites = {0}, citedby = {0}, journal = {Journal of Symbolic Logic}, volume = {52}, number = {3}, pages = {817-818}, }