Brusnakov М. ., Shyshatska Ю. ., Golovchenko О., В. . Броварець, and Potikha Л. . “Synthesis of a New Heterocyclic System [1,3]oxazolo[4,5-c][1,5,2]oxazaphosphepin”. Reports of the National Academy of Sciences of Ukraine, no. 3, July 2022, pp. 58-67, doi:10.15407/dopovidi2022.03.058.