Auroral and photoelectron fluxes in cometary ionospheresA. Bhardwaj; S.A. Haider; R.P. Singhal · 1990

Consequences of cometary aurora on the carbon chemistry at comet p/HalleyA. Bhardwaj; S.A. Haider; R.P. Singhal · 1995

Role of Auroral and Photoelectrons on the Abundances of Methane and Ammonia in the Coma of Comet HalleyS.A. Haider; A. Bhardwaj; R.P. Singhal · 1993