Van Dishoeck, Ewine F. Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;
Lis, D. C., Bergin, E. A., Schilke, P., & Van Dishoeck, E. F. (2013). Ortho-to-para ratio in interstellar water on the sightline toward Sagittarius B2(N). Journal of Physical Chemistry A, 117(39), 9661-9665. doi:10.1021/jp312333n.