TY - JOUR A1 - Healy, Lulu A1 - Hoyles, Celia JF - Journal for Research in Mathematics Education SN - 0021-8251 UR - https://discovery.ucl.ac.uk/id/eprint/10010308/ ID - discovery10010308 N1 - This document has been closed because the permission of the publisher has not been verified. IS - 4 EP - 428 AV - restricted VL - 31 Y1 - 2000/// SP - 396 TI - A study of proof conceptions in algebra ER -