1. B. S. Abramov, Stratigraphy of the Upper Paleozoic Deposits of the Southern Verkhoyansk Region (Nauka, Novosibirsk, 1974) [in Russian].
2. B. S. Abramov and A. D. Grigorjeva, Middle and Upper Carboniferous Biostratigraphy and Brachyopods of Verkhoyansk Region (Nauka, Moscow, 1983) [in Russian].
3. B. S. Abramov and A. D. Grigorjeva, Lower Carboniferous Biostratigraphy and Brachyopods of the Verkhoyansk Region (Nauka, Moscow, 1986) [in Russian].
4. B. S. Abramov and A. D. Grigorjeva, Permian Biostratigraphy and Brachyopods of the Verkhoyansk Region (Nauka, Moscow, 1988) [in Russian].
5. V. N. Andrianov, Upper Paleozoic Deposits of the Western Verkhoyansk Region (Nauka, Moscow, 1966) [in Russian].