1. Banks, P. M., , G., Kockarts, , Aeronomy, Part B, 267-274 Academic, San Diego, Calif., 1973,
2. A critical comparison of ionospheric depletion chemicals;Bernhardt;Geophys. Res.,1987
3. Ionospheric modification by rocket effluents;Bernhardt,1980
4. Spacelab 2 upper atmospheric modification experiment over Arecibo, 1, Neutral gas dynamics;Bernhardt;Astrophys. Lett. Comm.,1988
5. Spacelab 2 upper atmospheric modification experiment over Arecibo, 2, Plasma dynamics;Bernhardt;Astrophys. Lett. Comm.,1988