M. Klawe, и E. Phillips. CSCL '95: The first international conference on Computer support for collaborative learning, стр. 209--213. Mahwah, NJ, USA, Lawrence Erlbaum Associates, Inc., (1995)
M. Mosimege. Proceedings of the 22nd Conference of the International Group for the Psychology of Mathematics Education, 3, стр. 279--286. Stellenbosch, South Africa, PME, University of Stellenbosch, (июля 1998)
M. Mariotti. Proceedings of the 22nd Conference of the International Group for the Psychology of Mathematics Education, 1, стр. 180--195. Stellenbosch, South Africa, PME, University of Stellenbosch, (июля 1998)
D. Carraher, и D. Earnest. Proceedings of the 2003 Joint Meeting of PME and PMNA (PME27 and PME-NA25), 2, стр. 173--180. 1776 University Av., Honolulu, HI 96822, International Group for the Psychology of Mathematics Education, College of Education, University of Hawai'i, (июля 2003)
R. Masoon, и J. Macfeetors. proceedings of 2002 annual meeting of the Canadian Mathematics Education Study Group, стр. 143--144. Queen's University, (мая 2002)
R. Goldstein, и D. Pratt. Proceedings of the 25th Conference of the International Group for the Psychology of Mathematics Education (PME25), 3, стр. 49--56. PO Box 9432, 3506 GK Utrecht, The Netherlands, Freudenthal Institute, Faculty of Mathematics and Computer Science, Uthrect University, (июля 2001)