Augstein, J.; Cox, D. A.; Ham, A. L.; Leeming, P. R.; Snarey, M. (1973). "Beta-adrenoceptor blocking agents. 1. Cardioselective 1-aryloxy-3-(aryloxyalkylamino)propan-2-ols". Journal of Medicinal Chemistry. 16 (11): 1245–1251. doi:10.1021/jm00269a007. PMID4147835.
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DE 2238504, Augstein, Joachim; David Alexander Cox & Allan Leslie Ham, "Propanolaminderivate [Propanolamine derivates]", published 1973-02-22
Augstein, J.; Cox, D. A.; Ham, A. L.; Leeming, P. R.; Snarey, M. (1973). "Beta-adrenoceptor blocking agents. 1. Cardioselective 1-aryloxy-3-(aryloxyalkylamino)propan-2-ols". Journal of Medicinal Chemistry. 16 (11): 1245–1251. doi:10.1021/jm00269a007. PMID4147835.