31 Oct 1999
Two types of ELF hiss observed at Varanasi, India
D. K. Singh, Ashok K. Singh, R. P. Patel, R. P. Singh, and A. K. Singh
Ann. Geophys., 17, 1260–1267, https://doi.org/10.1007/s00585-999-1260-5,https://doi.org/10.1007/s00585-999-1260-5, 1999