Psychological Research · 1988 · 79 citations · 18 references
Natural SciencesMathematicsNumber TheoryArea Under The CurveArea Computation
18
Principles of Gestalt Psychology
C. C. Pratt, K. Koffka · The American Journal of Psychology · 1936 · 2.2K citations
The Child's Conception of Number
E. A. Peel, J. Piaget · British Journal of Educational Studies · 1953 · 1.8K citations