Response of the low-latitude D region ionosphere to extreme space weather event of 14-16 December 2006

- Kumar, Sushil, Kumar, Abhikesh, Menk, Frederick, Maurya, Ajeet K., Singh, Rajesh, Veenadhari, B.

Subionospheric VLF perturbations observed at low latitude associated with earthquake from Indonesia region

- Kumar, Abhikesh, Kumar, Sushil, Hayakawa, Masashi, Menk, Frederik