W. Olberding, T. Butz, A. Lerf: INVESTIGATION OF THE NUCLEAR-QUADRUPOLE INTERACTION OF IN-111(EC)CD-111 AND HF-181(BETA-)TA-181 IN THE INTERCALATION COMPOUND INXTAS2. 1990Synthetic Metals: 34. ISBN 0379-6779 http://dx.doi.org/10.1016/0379-6779(89)90453-0