Elementaire Deeltjes is a 19-book series with 19 released primary works first released in 1998 with contributions by Martin Redfern, Ineke Sluiter, Rana Mitter, Manfred B. Steger, Jim Fraser, John Monaghan, Peter Just, Eric H. Cline, Mike Rapport, John Bowker, Hugo Koning, Peter Atkins, Paul van Tongeren, Bill McGuire, Christopher Goto-Jones, Kees Boterbloem, Cas Mudde, Cristóbal Rovira Kaltwasser, Daniel Pick, Han Entzinger, Dirk De Schutter, Ruud Welten, Bert Jan Lietaert Peerbolte, Klaas Spronk, Daan Bronkhorst, Daniel Knegt, Simon Blackburn, Thijs Lijster, and Derk Walters.