Heymsfield et al, 1979: (description of problem with wetting, with references also to earlier documentation of this effect)

Lawson, R. P., L. J. Angus and A. J. Heymsfield, 1998: Cloud particle measurements in thunderstorm anvils and possible weather threat to aviation. J. Aviation, 35, 113-121. This article discusses the observation and cause of anomalously high temperature measurements sometimes seen in the presence of high concentrations of small ice particles.