A. Bates/A. Maxwell: DNA topology. Oxford UP 1993. N. Cozzarelli/J. Wang: DNA topology and its biological molecular biology. Cold Spring Harbor Lab. 1992. J. Mesirov/K. Schulten/D. Sumners (ed.): Mathematical approaches to biomolecular structure and dynamics. Springer 1996, 250p. 3-540-94838-4. DM 94. 25175 Wen-Jun Shen/.../Steven Smale: Towards a mathematical foundation of immunology and amino acid chains. Internet 2012, 32p.