ON SECONDARY PATENTING OF ORGANIC COMPOUNDS SUITABLE FOR USE AS ACTIVE PHARMACEUTICAL INGREDIENTS Статья Goizman M.S., Shimanovskii N.L., Zotova O.A., Ryzhkov I.O., Popova A.O., Chernobrovkin M.G., Korlyukov A.A., Suponitskii K.Y., Sinel’nikov A.V. Pharmaceutical Chemistry Journal. Том 53. 2019. С. 876-882