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Coates, Andrew J. and Tsang, S.M.E. and Wellbrock, Anne and Frahm, R.A. and Winningham, J.D. and Barabash, S. and Lundin, R. and Young, D.T. and Crary, F.J. (2011) Ionospheric photoelectrons: comparing Venus, Earth, Mars and Titan. Planetary and Space Science 59 (10), pp. 1019-1027. ISSN 0032-0633.
Weider, S.Z. and Swinyard, B.M. and Kellett, B.J. and Howe, C.J. and Joy, K.H. and Crawford, Ian A. and Gow, J.P.D. and Smith, D.R. (2011) Planetary X-ray fluorescence analogue laboratory experiments and an elemental abundance algorithm for C1XS. Planetary and Space Science 59 (13), pp. 1393-1407. ISSN 00320633.