@misc{indiciae34337dc3360b, title = {Pertinency of an extraneous variable.}, author = {I D Bross}, year = {1967}, doi = {10.1016/0021-9681(67)90080-x}, url = {https://pubmed.ncbi.nlm.nih.gov/6028268/}, note = {Source identifier: 6028268} }