Harvey, J., & Searle, C. (2020). Almost non-negatively curved 4-manifolds with torus symmetry. Proceedings of the American Mathematical Society, 148(11), pp. 4933-4950. doi:10.1090/proc/15093

Harvey, John, and Catherine Searle. "Almost Non-negatively Curved 4-manifolds With Torus Symmetry." Proceedings of the American Mathematical Society 148, no. 11 (2020): 4933-4950.

Harvey, John, and Catherine Searle. "Almost Non-negatively Curved 4-manifolds With Torus Symmetry." Proceedings of the American Mathematical Society 148.11 (2020): 4933-4950.