Searching for molecular hydrogen mid-infrared emission in the circumstellar environments of Herbig Be starsC. Martin-Zaïdi, E. F. van Dishoeck, J.-C. Augereau, P.-O. Lagage and E. PantinA&A, 489 2 (2008) 601-605DOI: https://doi.org/10.1051/0004-6361:200809576