Remarks on the Phonological Evolution of Russian in Comparison with the Other Slavic Languages
Roman Jakobson (1896–1982) was one of the greatest linguists of the twentieth century. Educated in Moscow and Prague, he taught at Masaryk University, Columbia University, Harvard University, and MIT. His many published works include Six Lectures on Sound and Meaning (MIT Press).
9: Russian Dialect Changes of Unaccented Vowels