KANE, Coleman; NOVOA, Diego; SCULL, Laura; THOMPSON, Jonathon. Defining a Zeroth Homotopy Invariant for Graphs. The PUMP Journal of Undergraduate Research, [S. l.], v. 3, p. 37–51, 2020. DOI: 10.46787/pump.v3i0.2250. Disponível em: https://journals.calstate.edu/pump/article/view/2250. Acesso em: 3 jul. 2024.