Bergin, E. A., Hogerheijde, M. R., Brinch, C., Fogel, J., Yıldız, U. A., Kristensen, L. E., et al. (2010). Sensitive limits on the abundance of cold water vapor in the DM Tauri protoplanetary disk. Astronomy and Astrophysics, 521: L33. doi:10.1051/0004-6361/201015104.