Sitaraman, M. A. (2016) “Symmetrizing elements of the kernel to characterize the solvability of the σ+ Lights Out puzzle on various geometrical arrangements”, Minnesota Journal of Undergraduate Mathematics. Minneapolis, MN, 2(1). Available at: https://pubs.lib.umn.edu/index.php/mjum/article/view/4127 (Accessed: 18 May 2024).