Neutron moderation theory with thermal motion of the moderator nucleiV. D. Rusov, V. A. Tarasov, S. A. Chernezhenko, A. A. Kakaev and V. P. SmolyarEur. Phys. J. A, 53 9 (2017) 179DOI: https://doi.org/10.1140/epja/i2017-12363-9