1. Cognitive versus situational analysis of problem-solving behaviors;Balacheff;For the Learning of Mathematics,1986
2. Proving or refuting claims: The case of elementary school teachers;Barkai,2002
3. Introduction to Real Analysis;Bartle,2000
4. A study of pupils’ proof-explanations in mathematical situations;Bell;Educational Studies in Mathematics,1976
5. Who’s there? A study of students’ reasoning about a proof of existence;Brown;International Journal of Research in Undergraduate Mathematics Education,2017