Field observations of the electromagnetic properties of first-year sea ice. - Donald K. Perovich; Jacob Longacre; David G. Barber; Robert A. Maffione; Glenn F. Cota; Curtis D. Mobley; Anthony J. Gow; Robert G. Onstott; Thomas C. Grenfell; W. Scott Pegau; Mark Landry; Collin S. Roesler (IEEE Trans. Geosci. Remote. Sens., 1998)