Electronic energy loss of protons and deuterons in multi-walled carbon nanotubes Carlos E. Celedón, Andrea Cortés, Esteban A. Sánchez, M. Sergio Moreno, Juan David Uribe, Nestor R. Arista and Jorge E. Valdés Eur. Phys. J. D, 71 3 (2017) 64 Published online: 16 March 2017 DOI: 10.1140/epjd/e2017-70408-4