\babel@toc {english}{}\relax \contentsline {xpart}{Chapters}{2}{part.1}% \addvspace {10\p@ } \contentsline {xchapter}{Introduction}{2}{chapter.1}% \addvspace {10\p@ } \contentsline {xchapter}{Analytical Investigations}{8}{chapter.2}% \addvspace {10\p@ } \contentsline {xchapter}{Experimental Investigations}{11}{chapter.3}% \addvspace {10\p@ } \contentsline {xchapter}{Discussion}{16}{chapter.4}%