L. Abouaf-Marguin and A.-M. Vasserot, Infrared spectroscopy of solid normal hydrogen doped with CH₃F and O₂ at 4.2 K: CH₃F:O₂ complex and CH₃F migration, Low Temp. Phys. 37, (2011) [Fiz. Nizk. Temp. 37, 456-462, (2011)] DOI: https://doi.org/10.1063/1.3593297.