Gardner, J.W.; Wiegandt, R.
"""This excellent and conceptually self-contained book, masterfully written by the best experts in radical theory, reflects the present state of the field and gives a clear picture of research in the theory of radicals. [T]his book brings together in a coherent and a comprehensive fashion the most important and up-to-date material on radical theory previously scattered in the literature. Some of this material was either not available or not easily accessible in the West before. The authors deserve our thanks for bringing it to a wide audience. The wealth of material in the book is enormous. The exposition is elegant and clear. It is an indispensable reference book for a researcher in ring theory and is also an ideal source book for a 'topic' graduate course or a student seminar."" - Zentralblatt MATH ""In 1988, L. Marki, R. Mlitz and R. Wiegandt presented an axiomatic unified approach to radical theory which includes all known special types of radicals in universal classes of 'ring-like' objects. This approach is the starting-point of the book, which provides a rather full account on the subject, in particular of the developments in the last 30 years. All in all a very recommendable monograph on this central topic!"" - Monatshefte fur Mathematik"