1. http://www.hausarbeiten.de/faecher/vorschau/2594.html "Technische und rechtliche Aspekte der digitalen Signatur" Diplomarbeit 2002. Technische Universität München
   
   link to: https://www.nicvroom.be/deterministic_de.htm Near footnote 34.

   http://alexandria.tue.nl/extra2/redes/carmeliet2003.pdfTU/e rede Prof.dr. J.Carmeliet

   link to: https://www.nicvroom.be/underst_nl.htm

   http://museumvictoria.com.au/pages/7573/the-stars-student-activities-1-10.pdf
   

   link to: https://www.nicvroom.be/progrm12.htm

   http://museumvictoria.com.au/pages/7573/the-stars-student-activities-11-20.pdf
   

   link to: https://www.nicvroom.be/progrm12.htm

   http://citeseerx.ist.psu.edu/viewdoc/download

   http://www.ualberta.ca/~csamuel/DoesNotCompute.doc
   

   https://www.nicvroom.be/shor.htm

   http://www.yatedo.fr/search/web?q=Heleen+de+Graaf&rlg=fr&uid=03b935ca355525b93350d8a9def02437&c=normal&start=30&p=4 Heleen de Graaf

   Link naar: https://www.nicvroom.be/bank_lit_nl.htm

   http://website-tools.net/google-keyword/word/chaos+theory+wiki Rating 6-10

   Link to https://www.nicvroom.be/bank_lit_nl.htm