1. Baldino RR Cabral TCB (1998) Lacan and the school credit system paper presented at 22nd Conference of the International Group for the Psychology of Mathematics Education, Stellenbosch, South Africa
2. Baldino RR Cabral TCB (1999) Lacan's four discourses and mathematics education paper presented at 23rd Conference of the International Group for the Psychology of Mathematics Education, Haifa, Israel