The CH out-of-plane bending modes of PAH molecules in astrophysical environments S. Hony, C. Van Kerckhoven, E. Peeters, A. G. G. M. Tielens, D. M. Hudgins and L. J. Allamandola A&A, 370 3 (2001) 1030-1043 Published online: 15 May 2001 DOI: 10.1051/0004-6361:20010242