Pulido Rull MA, Hernández C, Peña LM, Ponce NM, Rebolledo M. The Operant Conditioning of Letter String Problem Solving. MJBA [Internet]. 2010 Nov. 29 [cited 2024 May 14];36(3):55-76. Available from: https://revistas.unam.mx/index.php/rmac/article/view/21375