Vergnaud, G.: "Multiplicative Structures", In Lesh, R. and Landau, M. (Eds.), Acquisition of mathematics concepts and processes, Academic Press, pp.127-174 (1983). [isbn:012444220X]
Vergnaud, G.: "Multiplicative Structures", In Hiebert, J. and Behr, M. (Eds.), Number Concepts and Operations in the Middle Grades, Vol.2, pp.141-161 (1988). [isbn:0873532651]
https://takehikom.hateblo.jp/entry/20140924/1411511070
Kaput, J. J. and West, M. M: “Missing-Value Proportional Reasoning Problems: Factors Affecting Informal Reasoning Patterns”, In Harel, G. and Confrey, J. (Eds.), The Development of Multiplicative Reasoning in the Learning of Mathematics, State University of New York Press, pp.235-287 (1994). [isbn:0791417646]
Greeno, J. G.: “Instructional Representations Based on Research about Understanding”, In Schoenfeld, A. H. (Ed.), Cognitive Science and Mathematics Education, Routledge, pp.61-88 (1987). [isbn:0805800573]
https://books.google.co.jp/books?id=xvHESHH7m5IC&lpg=PP1&hl=ja&pg=PA61#v=onepage&q&f=false
https://takehikom.hateblo.jp/entry/2020/05/21/232014