Overzier, Roderik A. Cosmology, MPI for Astrophysics, Max Planck Society;
Oliveira, I., Merín, B., Pontoppidan, K. M., van Dishoeck, E. F., Overzier, R. A., Hernandez, J., et al. (2009). Optical characterization of a new young stellar population in the Serpens molecular cloud. The Astrophysical Journal, 691(1), 672-686. doi:10.1088/0004-637X/691/1/672.