"The publication of the English edition of the Soviet Encyclopaedia of Mathematics is an important event. I looked at several entries in my own field of algebra and found the articles authoritative, well organized, and lucidly written. The volumes will be of great help to anyone interested in mathematics" K.A. Hirsch, Professor Emerius, Queen Mary College, London. "The articles are well written (and) authoritative... all large academic libraries should hve (the Encyclopaedia of Mathematics)." Choice, June 1988. "Not a text to read from cover to cover (though one is tempted?), but a fascinating and invaluable reference book, which should be on every library's shelves. Highly recommended." Mathematik, Vol.25, 1988.