Groot de, Cornelius. Participant philosophy discussion group:
http://www.cornelis-de-groot.nl
Barendregt, Henk. Former student at the Montessori Lyceum:
http://thedhammaquest.wordpress.com/book
http://www.cs.ru.nl/~henk/
http://barendregt.wordpress.com/vip
Cornelissen, Ewout. Former student at the Montessori Lyceum: http://woneninschool.blogspot.nl/2007/07/wonen-in-school-de-flaptekst.html