|Sofia University, Faculty of Physics, Department of Meteorology and Geophysics, 5 James Bourchier Blvd., BG-1164 Sofia, Bulgaria|
- Ionosphere monitoring
- Monitoring migrations with GNSS
- N. Penov, D. Pancheva, P. Mukhtarov, G. Guerova "Ionospheric response to sudden stratospheric warming in January 2009 recorded by ionosonde measurements", 68, No 2, 241-250, 2015. Available from: http://www.proceedings.bas.bg/
- N. Penov, "Ionospheric response to sudden stratospheric warming" BSc thesis, July 2014.
- N. Penov, "Monitoring migrations with GNSS", Priroda magazine, v 1, pp. 100-104, 2013.
Oral and poster presentations
N. Penov, "Ionospheric response to sudden stratospheric warming during January 2009 seen by ionosonde measurements", GNSS4SWEC summer school, 8-11/09/2014, Golden Sands, Bulgaria. (poster)