A. Kratzer, GM. Kalvius, SJ. Flaschin, DR. Noakes, R. Wappling, A. Bruckl, K. Neumaier, K. Andres, T. Takabatake, K. Kobayashi, G. Nakamoto, H. Fujii: mu SR magnetic response of CeNiSn on impurity content. 1997Physica B: 230. ISBN 0921-4526 http://dx.doi.org/10.1016/S0921-4526(96)00780-6