1.
Gupta R, Levcovitz I, Margolis A, Stark E. Planar Lattice Subsets with Minimal Vertex Boundary. Electron. J. Combin. [Internet]. 2021Sep.24 [cited 2026May28];28(3):#P3.57. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v28i3p57