The Psychophysics of Algebra Expertise: Mathematics Perceptual Learning Interventions Produce Durable Encoding Changes. - Carolyn Bufford; Everett Mettler; Emma H. Geller; Philip J. Kellman (CogSci, 2014)

Perceptual Learning in Mathematics Produces Durable Encoding Improvements. - Carolyn Bufford; Philip J. Kellman (CogSci, 2015)