Deuteration and evolution in the massive star formation process - The role of surface chemistry F. Fontani, G. Busquet, Aina Palau, P. Caselli, Á. Sánchez-Monge, J. C. Tan and M. Audard A&A, 575 (2015) A87 Published online: 02 March 2015 DOI: 10.1051/0004-6361/201424753