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I, \thesisauthor\ matriculation number \matriculationid\ hereby declare that the \art\ submitted to the \institute\ is my own unaided work. All direct or indirect sources used are acknowledged as references. I am aware that the thesis in digital form can be examined for the use of unauthorized aid and in order to determine whether the thesis as a whole or parts incorporated in it may be deemed as plagiarism. Further rights of reproduction and usage, however, are not granted here. This paper was not previously presented to another examination board and has not been published.

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\textsc{\thesisauthor}
