Non-gravitational effects and activity of comet C/2006 W3 (Christensen) and C/2008 Q3 (Garradd) Szutowicz, S. ; Sitarski, G. ; Bockelee-Morvan, D. ; Crovisier, J. ; Hartogh, P. ; de Val-Borro, M. ; Biver, N. Abstract Publication: European Planetary Science Congress 2010 Pub Date: September 2010 Bibcode: 2010epsc.conf..793S