@misc{indiciae2a5a717a9cf8, title = {"PERSISTENT" CONDITIONS: A METHODOLOGICAL NOTE.}, author = {D HEWITT}, year = {1965}, doi = {10.1080/00039896.1965.10663961}, url = {https://pubmed.ncbi.nlm.nih.gov/14219473/}, note = {Source identifier: 14219473} }