This volume of Lecture Notes in Mathematics presents to English speaking readers the Voronezh University Press series "Novoe v global'nom analize" in which we are involved as editor-in-chief and deputy editor-in-chief respectively (the title may be translated as "New Developments in Global Analysis"). The main purpose of the series is to publish survey (expository) papers,or papers giving a detailed account of important results in Global Analysis and its applications. Among the members of the editorial board there are well-known such as A.T.Fomenko, A.S.Mishchenko, S.P.Novikov,
M.M.Postnikov, A.M.Vershik and others.