From the reviews: "This volume resembles the volumes of Kluwer's general encyclopedia of mathematics ... . all the articles, have been freshly written for this book. This is a fully original work. ... This material is fascinating ... . S. Duplij, the leading editor of this encyclopedia, and his co-editors have done a monumental job ... . There are 480 oversized pages of encyclopedia with more than 700 articles, and then an Author index, a Subject index of 31 four-column pages, and a list of 116 abbreviations." (P. D. F. Ion, Mathematical Reviews, Issue 2005 m)