Kulbachinskii, V. A.; Ezhikov, N. S.; Lunin, R. A.; Bulychev, B. M. Synthesis and Superconductivity of Organometallic Fullerides M_(3–n)(NR₄)_(n)C₆₀, Where M = K, Rb; R = H, D, Me, Et, Bu; n = 1, 2,. Fiz. Nizk. Temp. 2020, 47, 46-57.