2Edward A. Silver & Jinfa Cal. An Analysis of Arithmetic Problem Posing by Middle School Students. Journal for Research in Mathematics Education,1996,5:521 - 539
3E. A. Silver, Joanna M. Downs, etc. Posing Mathematical Problems: An Exploratory Study. Journal for Research in Mathematics Education, 1996,3:293-309
4E. A. Silver. On Mathematical Problem Posing. For the I.earning of Mathematics 14, l(Feb, 1994:19 - 28
5Jinfa Cai. An Investigation of U.S. and Chinese Students' Mathematical Problem posing and Problem Solving. Mathematics Education Research Journal, 1998,1:37 - 50
6L. D. English. The Development of Fifth - Grade Children's Problem - Posing Abilities. Educational Studies in Mathematics, 1997,3:183 - 217
7Raffaella Borasi. On the Nature of Problems. Educational Studies in Mathematics, 1996,2:125 - 141.