+ \bibitem{van_ommen} A. H. van Ommen. Nucl. Instr. and Meth. B 39 (1989) 194.
+ \bibitem{specht} E. D. Specht, D. A. Walko, S. J. Zinkle. Nucl. Instr. and Meth. B 84 (2000) 390.
+ \bibitem{ishimaru} M. Ishimaru, R. M. Dickerson, K. E. Sickafus, Nucl. Instr. and Meth. B 166-167 (2000) 390.
+ \bibitem{knuth} D. E. Knuth. The art of computer programming Vol. 2. Addison-Wesley, 1981.
+ \bibitem{nr} W. H. Press. Numerical recipes. The art of scientific computing. Cambridge Univ. Pr. 1986.
+ \bibitem{park_miller_zufall} S. K. Park, K. W. Miller. Communications of the ACM 31 (1988) 1192.