S. Messenger, S. J. Clemett, S. Amari, X. Gao, R. M. Walker, X. D. F. Chillier, and R. N. Zare, “Indigenous Polycyclic Aromatic Hydrocarbons in Circumstellar Graphite Grains from Primitive Meteorites,” Astrophysical Journal 502, 284-295 (1998). S. Messenger, S. J. Clemett, S. Amari, X. Gao, R. M. Walker, X. D. F. Chillier, and R. N. Zare, “Indigenous Polycyclic Aromatic Hydrocarbons in Circumstellar Graphite Grains from Primitive Meteorites,” Astrophysical Journal 502, 284-295 (1998).
