Collisions in magnetised plasmas Philippe Ghendrih, Thomas Cartier-Michaud, Guilhem Dif-Pradalier, Damien Esteve, Xavier Garbet, Virginie Grandgirard, Guillaume Latu, Claudia Norscini and Yanick Sarazin ESAIM: Proc., 50 (2015) 81-112 Published online: 20 March 2015 DOI: 10.1051/proc/201550005