Here is the paper that put forward the distinction.
Anderson, J. R., Reder, L. M., & Lebiere, C. (1996). Working memory: Activation limitations on retrieval. Cognitive Psychology, 30 (3), 221–256. https://doi.org/10.1006/cogp.1996.0007
Here is the paper that put forward the distinction.
Anderson, J. R., Reder, L. M., & Lebiere, C. (1996). Working memory: Activation limitations on retrieval. Cognitive Psychology, 30 (3), 221–256. https://doi.org/10.1006/cogp.1996.0007