M. O. Maksymovych proposed new letters for usage in the Ukrainian alphabet, based on the etymological principles of spelling to preserve the old writing of Ukrainian. Of the letters proposed, И̂ was one of them.[2]
This letter is also used in some dialects of Bulgarian and Serbian (си̂н).[3]
^[Simonov et Kyalundzyuga 1998] (ru) Михаилом Д. Симонов et Валентина Т. Кялундзюга, , vol. I, Alfred F. Majewicz, International Institute of Ethnolinguistics and Oriental Studies (IIEOS), coll. « Monograph series » (no 15/1), 1998 (ISBN 83-902273-8-X, ISSN 1230-3283)