Photoinduced polycyclic aromatic hydrocarbon dehydrogenation The competition between H- and H2-lossP. Castellanos, A. Candian, J. Zhen, H. Linnartz and A. G. G. M. TielensA&A, 616 (2018) A166DOI: https://doi.org/10.1051/0004-6361/201833220