TY  - JOUR 
T1  - Examining the method of proofs and refutations in pre-service teachers education
JO  - Bolema: Boletim de Educação Matemática
A1  - Karakuş, Fatih
A1  - Bütün, Mesut
SN  - 0103-636X
UL  - 10.1590/S0103-636X2013000100011
VL  - 27 
Y1  - 2013
PB  - Brasil 
ER  -