van Dishoeck, E. F. Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;
van Kempen, T. A., van Dishoeck, E. F., Hogerheijde, M. R., & Guesten, R. (2009). Dense and warm molecular gas in the envelopes and outflows of southern low-mass protostars. Astronomy & Astrophysics, 508(1), 259-274. doi:10.1051/0004-6361/200811099.