An instrument system for digital display of duration of bright sunshine. MAUSAM, [S. l.], v. 30, n. 1, p. 59–64, 1979. DOI: 10.54302/mausam.v30i1.2980. Disponível em: https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/2980. Acesso em: 29 dec. 2025.