Optical data on cryogenic ices

The temperature-dependent spectra of alpha and beta nitrogen ice with application to Triton.
Grundy, Schmitt, and Quirico 1993, Icarus 105, 254-258.
The temperature-dependent near-infrared absorption spectrum of hexagonal H2O ice.
Grundy and Schmitt 1998, J. Geophys. Res. 103, 25,809-25,822.
The temperature-dependent spectrum of methane ice I between 0.7 and 5 microns and opportunities for near-infrared remote thermometry.
Grundy, Schmitt, and Quirico 2001, Icarus 155, 486-496.