Discovery of interstellar methane - Observations of gaseous and solid CH4 absorption toward young stars in molecular cloudsJ. F. Arens, J. M. Achtermann, J. Carr et al.|The Astrophysical Journal|1991Cited by 193
Discovery of interstellar acetyleneJ. Carr, D. E. Bruce, J. F. Arens et al.|The Astrophysical Journal|1989Cited by 123