@BOOK{NAP9268, title = "Toxicity of Alternatives to Chlorofluorocarbons: HFC-134a and HCFC-123", doi = "10.17226/9268", url = "https://nap.nationalacademies.org/catalog/9268/toxicity-of-alternatives-to-chlorofluorocarbons-hfc-134a-and-hcfc-123", year = 1996, publisher = "The National Academies Press", address = "Washington, DC" }