From the reviews:
This monograph provides detailed topological investigations of nonsmooth optimization problems. the book highlights and motivates recent developments in a broad field of active research. The material is well presented, so that the book may be warmly recommended to graduate students and researchers in optimization. (Oliver Stein, Mathematical Reviews, October, 2013)
The textbook (PhD thesis of the author) deals with mathematical programming problems which have smooth data but show, because of their structure, intrinsic non-smooth behavior . It can be used as a compendium of the critical-point theory also in the smooth case since nearly all important results are cited. New results are proved or it is referred to recently published results of the author. For researchers in the above described field of mathematical programming the book will become a very helpful and indispensable tool. (Armin Hoffmann, Zentralblatt MATH, Vol. 1234, 2012)