An NMR Studies of (C5H11N2)+ and (C7H12N2)2+
YU Chong, LI Zhi-Qiang, BI Yan-Gang, SHI Xu-Dong, ZHU Lin-Li, Xia Si-Feng, LU Xi
Chinese Journal of Magnetic Resonance . 2010, (4): 524 -531 .