Heymsfield, A. J., Schmitt, C. G., Bansemer, A. R., Baumgardner, D., Weinstock, E. M., Smith, J. T., & Sayres, D. (2004). Effective ice particle densities for cold anvil cirrus. Geophysical Research Letters, 31, 5. doi:10.1029/2003GL018311