Copyright notice

The text in these pages is written by us. However, it is very hard to avoid wordings, constructs or even whole sentences which are consistently repeated in literature, or are perfectly phrased by some other author. Whereever practical, we took care to include references to other authors. If we failed to do so in a place or two, it was not by intention to appropriate someones intellectual property, and please do draw our attention to this fact. We systematically check the content of these pages with anti-plagiarism tools like CopyGator, PlagiarismSoftware, Small SEO Tools and The Plagiarism Checker.

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