1. Malinovskij N.N., Leont'eva N.S., Meshalkin I.N., Ovchininskij N.N. Degree of operational risk (method of clinical definition and practical significance). Hirurgija. 1973; (10): 32-6. (in Russian)
2. D'jachenko P.K., Galkin V.V. The method of definition and classification of surgical risk. Vestnik hirurgii. 1975; (7): 75-9. (in Russian)
3. Komorovskij Ju.T., Dzjubanovskij I.Ja. Comparative evaluation of methods of determining the risk of surgery in the age aspect. Vestnik hirurgii. 1980; 125(11): 9-16. (in Russian)
4. Komorovskij Ju.T. Methodical basis for studying errors in surgery. Klinicheskaya hirurgiya. 1976; (9): 54-62. (in Russian)
5. Balagin V.M., Doleckij A.S., Soboleva N.S. et al. Determination of the degree of operational and anesthetic risk in children. Anesteziologiya i reanimatologiya. 1987; (4): 70-4. (in Russian)