1. Bayandin, N.I., Possibilities of Concurrent Reconnaissance. http://www.elitarium.ru/2004/01/29/vozmozhnosti_konkurentnojj_razvedki.html .
2. Cachaner, L., Competitive Intelligence, New York, 1996.
3. Dudikhin, V.V. and Dudikhina, O.V., Konkurentnaya razvedka v Internet (Concurrent Reconnaissance in Internet), Moscow: DMK-Press, 2002.
4. Kretov, V.S. and Kotov, N.M., ’Angara’-Information and Analytical System, Situatsionnye tsentry i sovremennye informatsionno-analiticheskie tekhnologii podderzhki prinyatiya reshenii: Materialy nauchno-prakticheskoi konferentsii (Proc. Sci.-Prac. Conf. ’situation Centers and Contemporary Information-Analytical Technologies of Decision Making Support), Danchul, A.N., Ed., Moscow, 2009.