Rodenstein, D., & Stanescu, D. (1982). Mouth Spraying Versus Inhalation of Fenoterol Aerosol in Healthy-subjects and Asthmatic-patients. British Journal of Diseases of the Chest, 76(4), 365-373. https://doi.org/10.1016/0007-0971(82)90072-9 (Original work published 1982)