Spin dynamics in highly frustrated pyrochlore magnets Sylvain Petit, Solène Guitteny, Julien Robert, Pierre Bonville, Claudia Decorse, Jacques Ollivier, Hannu Mutka and Isabelle Mirebeau EPJ Web of Conferences, 83 (2015) 03012 Published online: 23 January 2015 DOI: 10.1051/epjconf/20158303012