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| | References for Freudenthal (Site not responding. Last check: ) |
 | | J Adda, Une lumière s'est éteinte : H. Freudenthal, homo universalis, in The legacy of Hans Freudenthal (Dordrecht, 1993), 9-19. |
 | | H J M Bos, 'The bond with reality is cut' - Freudenthal on the foundations of geometry around 1900, in The legacy of Hans Freudenthal (Dordrecht, 1993), 51-58. |
 | | L Streefland, Editorial : the legacy of Freudenthal, in The legacy of Hans Freudenthal (Dordrecht, 1993) 1-7. |
| www-history.mcs.st-and.ac.uk /%7ehistory/References/Freudenthal.html (243 words) |
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