@inproceedings{inproceedingsa612dc1a,
title   = {Operant learning and retention at 9 months},
author = {Klein, P J and Wondoloski, T L and Wurtzel, N L and Bhatt, R S and Campos-de-Carvalho, Mara Ignêz},
year = {1993},
booktitle   = {Annual Meeting of the Eastern Psychological}
}