P. Aravindakshan and K. N. Iyer  “Day-to-day variability in ionospheric electron content at low latitudes”, Planet. Space Science 38, 743, 1990

P. Aravindakshan and K. N. Iyer  “Solar and Lunar variation in total electron content at Tokyo”, Ind. J. Radio and Space. Phys. 21, 354, 1992

P. Aravindakshan and K. N. Iyer “Day-to-day variability in ionospheric electron content”, J.Atmos. Terr. Phys. 55, 1565, 1993.

P. Aravindakshan and K. N. Iyer “Equatorial anomaly in ionospheric electron content”, Intl. Symp. On Optical and Radio Remote Sensing of the Atoms. Environment, NPL New Delhi, 24-26 October 1990, Abstracts; p. 204.

 P. Aravindakshan and K. N. Iyer “Day-to-day variability in ionospheric electron content”, XX General Assembly IUGG Vienna 11-24 Aug. 1991, IUGG Program and Abstracts p. 187.

P. Aravindakshan and K. N. Iyer “Solar and Lunar variation in ionospheric total electron content”, National Space Sci. Symp., March 11-14, 1992. Abstracts p. 49.

 K. N. Iyer, H. P. Joshi, R. D. Jivrajani and P. Aravindakshan “Comparative study of IEC near the crest of the equatorial anomaly with IRI and other models from solar maximum to solar minimum”, IRI Workshop, Jan. 9-13, 1995, NPL, Abstract p. 41.

 K. N. Iyer , H. P. Joshi, R.D. Jivarajani and P Aravindakshan “Comparative study of IEC near the crest of the equatorial anomaly with IRI and other models from solar maximum to solar minimum”, Adv. Space Res. Vol. 18, No. 6, pp (6) 233-(6) 236, 1996.