1. Walugis A.C., Rashimas A.P. Statistical algorithm of structure analysis of electrocadiosignal.-Kibernetika, 1979, N 3, pp. 91–95 (on Russian).
2. Golderger E.L., Rigni D.R., West B.D. Chaos and fractales in human physiology. W mire nauki, 1990, N 4, pp. 25–32 (on Russian).
3. Ragcheeva T.A. Cognitive representation of rhythm ECG structure.-Programmnie producti i sistemi, 1992, N2, pp.38–47 (on Russian).
4. Reddy C.V.R., Gould L.A. Correlative atlas of vector-cardiograms and electrocardiograms.-New York: Futura, 1977.-295 p.
5. Fainzilberg L.S., Aksenova T.I., Potapova T.P, Shelechova V.J. Cognitive Graphic Image of Electrocardiosignal as Means for Functional Human State Interpretation.-Abstracts of the Second International Workshop “Information Theories and Applications” (4–8 April, 1994, Sandansky-Bulgaria), FOI-Commerce, Sofia,1994, p.12.