Remarks
HITRAN online is covered by Thomson Reuters Data Citation Index.
The database is a long-running project started by the Air Force Cambridge Research Laboratories (AFCRL) in the late 1960s in response to the need for detailed knowledge of the infrared properties of the atmosphere.
HITRAN on the Web: https://hitran.iao.ru/home
HITRAN - Harvard-Smithsonian Center for Astrophysics: https://lweb.cfa.harvard.edu/hitran/