This review presents the fundamentals of the method of integral equations of the theory of liquids. One of the central problems of the theory, the definition of bridge-functionals, is analyzed. Some applications of the method of integral equations to simple liquid systems are discussed, and the problem of description of complex polyatomic classical systems is considered.

PACS: 05.70.−a, 61.20.Gy, 61.20.Ne, 61.25.Em (all) DOI: 10.1070/PU1999v042n06ABEH000544 URL: https://ufn.ru/en/articles/1999/6/c/ 000081542900003 Citation: Sarkisov G N "Approximate equations of the theory of liquids in the statistical thermodynamics of classical liquid systems" Phys. Usp. 42 545–561 (1999) BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks Оригинал: Саркисов Г Н «Приближенные уравнения теории жидкостей в статистической термодинамике классических жидких систем» УФН 169 625–642 (1999); DOI: 10.3367/UFNr.0169.199906c.0625