1. Kutushov M.V. Rak istselim?! Tainstvennye prichiny vozniknoveniya raka [Will we heal cancer?! Mysterious causes of cancer]. Moscow, AST Publ., 2008, 514 p. (In Russian)
2. Zemlyanoi A.G., Aliev S.A, Levashova N.V., Shabanova L.F., Shul'gin V.L. Post-resection gastritis in the immunological aspect. Vestnik khirurgii imeni I. I. Grekova [Bulletin of surgery named after I. I. Grekov]. 1985, no. 9, pp. 18–20. (In Russian)
3. Abdurakhmanov G.M., Gasangadzhieva A.G., Gabibova P.I. Ekologo-geograficheskaya obuslovlennost' i prognoz zabolevaemosti zlokachestvennykh novoobrazovanii naseleniya RD [Ecological and geographical conditionality and forecast of the incidence of malignant neoplasms in the population of the Republic of Dagestan]. Makhachkala, 2009, 499 p. (In Russian)
4. Nemtsova M.V., Bykov I.I., Chekunova N.V., Zaletaev D.V., Glukhov A.I., Khorobykh T.V. Systems of molecular genetic markers for gastric cancer. Klinicheskaya laboratornaya diagnostika [Clinical laboratory diagnostics]. 2013, no. 11, p. 4. (In Russian)
5. Rubtsova M.P., Vasil'kova D.P., Malyavko A.N., Naraikina Yu.V., Zvereva M.E., Dontsova O.A. Telomerase functions: telomere lengthening and more. Acta Naturae. 2012, vol. 4, no. 2(13), p. 18. (In Russian)