1. From Susie’s question to CFC free: An inventor’s perspective on forty years of MDI development and regulation;Thiel,1996
2. Metered dose inhaler technology,1998
3. Summary of common approaches to pharmaceutical aerosol administration,2004
4. Pulmonary drug delivery: an historical overview;Sanders,2011
5. Asthma treatment: A multidisciplinary approach; NATO ASI Series,1992