· Boguslavsky V. M. Scepticism in Philosophy. – Ch. 1, 10 (in Russian) (315 KB).
· Losev A. F. Sextus Empiricus and the Cultural Impact of Ancient Scepticism (The Introductory Article to the Russian Translation of Sextus Empiricus, 2 vol.) (in Russian) (159 KB).
· Moore G. E. Proof of an External World (in Russian) (79 KB)
· Richter R. Scepticism in Philosophy. – Vol. 1 (in Russian) (scanned text, unedited: 6,28 MB; zip-archive: 736 KB).