The mobile Android app of the travel tracking system. Mathematical Machines and Systems, [S. l.], n. 1, p. 53–60, 2020. DOI: 10.34121/1028-9763-2020-1-53-60. Disponível em: https://www.j-mms.de/index.php/mms/article/view/2020-1-a4. Acesso em: 11 aug. 2026.