References to figures are given in italic

Numerous cross-references are given in the text, so that related topics can readily be found. Key words are written in italic. The citation of references is according to the first three letters of the first author s surname followed by a number. In this way some information on the literature cited is provided already in the text, and work by one author is readily identified in the list of references for each chapter at the end of the book. But as a consequence, references are not cited in chronological order. Most figures have been adapted from the literature. The respective references are also listed at the end of the book for quick access to the original literature as well as for acknowledgement to the authors. 

---