Galtsov, N. N., Prokhvatilov, A. I., & Strzhemechny, M. A. (2000). Structure characteristics of methane-doped solid normal hydrogen: Low-Temperature Physics and Chemistry in Cryomatrice. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, 26(9-10), 918–923. https://doi.org/10.1063/1.1312394