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Document type:
Buchbeitrag 
Author(s):
Obersteiner, A.; Van Hoof, J.; Verschaffel, L. 
Title:
Expert mathematicians' natural number bias in fraction comparison 
Pages contribution:
393–400 
Editor:
A. M. Lindmeier & A. Heinze 
Book title:
Proceedings of the 37th Conference of the International Group for the Psychology of Mathematics Education, Vol. 1 
Publisher:
PME 
Publisher address:
Kiel 
Year:
2013