Srednevekovye poselenija XIV-XVII vekov v okruge El'ca: Sravnitel'no-istoričeskaja charakteristika sistem zaselenija po reke El'čik : (Medieval settlements of the 14th-17th cc. in Yelets district (a comparative historical characteristic of the history of settling along the river Yelchik)). - Tropin, N. A. (Nauka, 2008)