Near-IR echelle spectroscopy of Class I protostars: Mapping Forbidden Emission-Line (FEL) regions in [FeII]C. J. Davis, E. Whelan, T. P. Ray and A. ChrysostomouA&A, 397 2 (2003) 693-710DOI: https://doi.org/10.1051/0004-6361:20021545