Nowak P, Johansson L, Kowalski A. "Method for the Synthesis of 3-Ethyl-4-oxo-10-oxa-3-aza-tricyclo[5.2.1.0*1,5*]dec-8-ene-6-carboxylic acid" [P]. European Patent, EP 3896475 A1, 2015-12-22.
发明人李文辉,罗永刚,冯建国. "A Process for Preparing High-Purity 3-Ethyl-4-oxo-10-oxa-3-aza-tricyclo[5.2.1.0*1,5*]dec-8-ene-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111192892 A, 授权公告日 2023-03-15.
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