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The following regulations are determined by the author for the use of this publication:
It is allowed to copy the complete content or parts of the content for personal use free of charge. It is allowed to pass on copies of the unchanged content to third parties for their personal use free of charge. All copies, including incomplete copies, must contain the name of the author, these stipulations and the complete bibliography. It is not allowed to pass on or publish copies or other reproductions for a fee or other monetary benefit without the written consent of the author. It is not allowed to pass on modified versions. It is not allowed to pass on incomplete copies, in which the content has been distorted by the reduction.
Home page   Abstract   1 Introduction