Mixtures teaching approach

Some authors have tried to obtain this mixture by producing multi-authored books consisting of chapters written by the sp>ecialists. We have undertaken the difficult task of producing a book based on our knowledge and experience, but written by one hand. All the disadvantages of such an approach have become clear to us. The way in which these were solved will probably not satisfy everybody. However, if this book inspires some of the investigators just entering this field, and if it teaches him or her how to find his way in research, our main aim will have been achieved. 

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