SRINIVASAN, P. K.; SASTRI, N. S. Direction of Rapid Geomagnetic changes at Indian observatories. MAUSAM, [S. l.], v. 15, n. 1, p. 90–94, 1964. DOI: 10.54302/mausam.v15i1.5524. Disponível em: https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/5524. Acesso em: 20 jul. 2024.