On the excitation of the infrared knots along protostellar jetsT. Giannini, C. McCoey, A. Caratti o Garatti, B. Nisini, D. Lorenzetti and D. R. FlowerA&A, 419 3 (2004) 999-1014DOI: https://doi.org/10.1051/0004-6361:20040087