ADHIKARY, R.; KUNDU, M. K.; SAU, B. Circle formation by asynchronous opaque robots on infinite grid. Computer Science, [S. l.], v. 22, n. 1, 2021. DOI: 10.7494/csci.2021.22.1.3840. Disponível em: https://journals.agh.edu.pl/csci/article/view/3840. Acesso em: 6 may. 2024.