@article{doi:10.1001/archpsyc.1969.01740140039004,
author = {Pishkin V and Shurley JT},
title = {VErbal behavior conditionability of schizophrenics and normals within free operant paradigm},
journal = {Archives of General Psychiatry},
volume = {20},
number = {2},
pages = {167-173},
year = {1969},
doi = {10.1001/archpsyc.1969.01740140039004},
URL = { + http://dx.doi.org/10.1001/archpsyc.1969.01740140039004},
eprint = {/data/Journals/PSYCH/12175/archpsyc_20_2_004.pdf}
}