@misc{indiciaecd3e33b346e2, title = {Measurement, or how do we know what we know? Topic one: validity.}, author = {Catherine Greeno}, year = {2003}, doi = {10.1111/j.1545-5300.2003.00433.x}, url = {https://pubmed.ncbi.nlm.nih.gov/14606205/}, note = {Source identifier: 14606205} }