A VARIATIONAL PRINCIPLE FOR HYPOELLIPTIC EQUATIONS WITH CONSTANT-COEFFICIENTS ArticleFILIPPOV V.M.Differential Equations. Vol. 22. 1986. P.. 258-262
ECG-CHANGES ASSOCIATED WITH ALCOHOLIC USE AND ABUSE ArticleDVORNIKOV V.E.Kardiologiia. Vol. 26. 1986. P.. 103-104