Ternary association of H+ ion with H2 at 11 K, experimental study I. Zymak, P. Jusko, Š. Roučka, R. Plašil, P. Rubovič, D. Gerlich and J. Glosík Eur. Phys. J. Appl. Phys., 56 2 (2011) 24010 Published online: 28 October 2011 DOI: 10.1051/epjap/2011110172