Tasks of the European Union Science Olympiads 2003–2007.
Challenging Interdisciplinary Science Experiments. Volume 1
Editors: Dr. Michael A. Cotter & Dr. Stefan Peterson
Publisher: Waxmann Verlag GmbH, Münster, Germany (2013)
"Waxmann: Bücher". Archived from the original on 27 May 2014. Retrieved 10 March 2013.[autor]=PER106003&tx_p2waxmann_pi1[buch]=BUC123216
Tasks of the European Union Science Olympiads 2003–2007.
Challenging Interdisciplinary Science Experiments. Volume 1
Editors: Dr. Michael A. Cotter & Dr. Stefan Peterson
Publisher: Waxmann Verlag GmbH, Münster, Germany (2013)
"Waxmann: Bücher". Archived from the original on 27 May 2014. Retrieved 10 March 2013.[autor]=PER106003&tx_p2waxmann_pi1[buch]=BUC123216
"EUSO". Archived from the original on 24 September 2015. Retrieved 10 March 2013.