From the reviews: "Any book on an interdisciplinary subject must build up a self-consistent theory able to explain a great number of observations. The concepts introduced must be pertinent for the phenomena in question and sufficiently elaborated in order to extract solid conclusions in an clear and concise way. These requirements have been perfectly fulfilled in the material presented in this book. ... the book is highly recommendable due to the insight it gives into the field of cosmic structures, providing sound basis for further research." (J. M. Rubi, Journal of Statistical Physics, 2006)