Pisarska, E., Stachowiak, P., & Jeźowski, A. (2007). Observation of relaxation of molecular spins in CH₄ and CD₄ crystals in thermal conductivity experiment: Classical Cryocrystals. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, 33(6-7), 768–771. https://doi.org/10.1063/1.2755190