1. Afonina, G.A. and Leonov, V.G., Studies of the chemical-mineralogical properties and fusibility of clays in the Shulepovo deposit, Izv. Tula Gos. Univ., 2014, no. 1, pp. 89–98.
2. Bortnikov, N.S., Savko, A.D., Novikov, A.M., et al., The Latnenskoe refractory clay deposit (Central Russia), Lithol. Miner. Resour., 2016, no. 6, pp. 425–436.
3. Drits, V.A. and Kossovskaya, A.G., Glinistye mineraly: slyudy, khlority (Clay Minerals: Micas and Chlorites), Moscow: Nauka, 1991.
4. Ievlev, L.V., Ob"yasnitel’naya zapiska k obzornoi karte mestorozhdenii stroitel’nykh materialov Ryazanskoi oblasti masshtaba 1 : 1 000 000 (Explanatory Note to Review Map of Construction Material Deposits in the Ryazan region, Scale 1 : 1 000 000), Moscow: Minist. Geol. RSFSR, Geol. Fond RSFSR, 1986.
5. Keller, W.D., The origin of Missouri fire clays, Clays Clay Miner., 1953, vol. 2, no. 1, pp. 7–46.