HST and spectroscopic observations of the L1551 IRS5 jets (HH154)C. V. M. Fridlund, R. Liseau, A. A. Djupvik, M. Huldtgren, G. J. White, F. Favata and G. GiardinoA&A, 436 3 (2005) 983-997DOI: https://doi.org/10.1051/0004-6361:20042399