J. Aldegunde, D. Herráez-Aguilar, P. G. Jambrina, F. J. Aoiz, J. Jankunas, and R. N. Zare, “H + D2 Reaction Dynamics in the Limit of the Low Product Recoil Energy,” J. Phys. Chem. Lett. 3, 2959-2963 (2012).