Molly Baird, Sara C. Billey, Erik D. Demaine, Martin L. Demaine, David Eppstein, Sándor P. Fekete, Graham Gordon, Sean Griffin, Joseph S. B. Mitchell, Joshua P. Swanson. Existence and Hardness of Conveyor Belts. Electr. J. Comb., 27(4):4, 2020. [doi]
Abstract is missing.