Karpenko, O.B., V.V. Trachevskij, O.V. Filonenko, V.V. Lobanov, M.V. Avdeev, T.V. Tropin, O.A. Kyzyma, and S.V. Snegir. “NMR Study of Non-Equilibrium State of Fullerene C60 in N-Methyl-2-Pyrrolidone”. Ukrainian Journal of Physics 57, no. 8 (August 30, 2012): 860. Accessed May 9, 2025. https://ujp.bitp.kiev.ua/index.php/upc/article/view/2021213.