Acknowledgements
It is important to highlight the contribution of the students which helped to develop
the concept and content of this book. Their questions, comments, and struggles
during difficult lectures, assignments, and final exams helped me to develop the idea
for this approach. In addition, it is important to highlight the contribution of many
undergraduate and postgraduate students. Furthermore, I would like to express my
sincere appreciation to the Springer publisher, especially to Dr. Christoph
Baumann, for giving me the opportunity to realize this book.
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