toponymic adjectives in -insk(ij) / -ensk(ij) / -jansk(ij)
Elena V. Beshenkova, Olga E. Ivanova. The typology of spelling rules and the status of the rule on the words in -insk(ij) / -ensk(ij) / -jansk(ij)
RJANO. 2019. № 2 (38), Pages. 25 - 41