Gao, Yibo, Zhaoqi Li, Thuy-Duong Vuong, and Lisa Yang. “Toric Mutations in the dP$_2$ Quiver and Subgraphs of the dP$_2$ Brane Tiling”. The Electronic Journal of Combinatorics 26, no. 2 (May 3, 2019): P2.19. Accessed March 27, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v26i2p19.