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xxviii PREFACE

formula 5 in Subsection 3.1.2. At the end of each chapter, we present a list of main and
additional literature sources containing more detailed information about topics of interest
to the reader.
Special font highlighting in the text, cross-references, an extensive table of contents,
and an index help the reader to find the desired information.
We would like to express our deep gratitude to Alexei Zhurov for fruitful discussions
and valuable remarks. We also appreciate the help of Vladimir Nazaikinskii and Grigorii
Yosifian for translating several chapters of this book and are thankful to Kirill Kazakov and
Mikhail Mikhin for their assistance in preparing the camera-ready copy of the book.
The authors hope that this book will be helpful for a wide range of scientists, university
teachers, engineers, and students engaged in the fields of mathematics, physics, mechanics,
control, chemistry, biology, engineering sciences, and social and economical sciences.
Some sections and examples can be used in lectures and practical studies in basic and
special mathematical courses.
Andrei D. Polyanin
Alexander V. Manzhirov