c2d Spitzer IRS spectra of embedded low-mass young stars: gas-phase emission linesF. Lahuis, E. F. van Dishoeck, J. K. Jørgensen, G. A. Blake and N. J. EvansA&A, 519 (2010) A3DOI: https://doi.org/10.1051/0004-6361/200913957