TY  - RPRT
TI  - Equal-appearing interval scale values and successive interval scale values derived from the same set of ratings.
AU  - F H Silverman
AU  - D Sherman
PY  - 1967
DO  - 10.2466/pms.1967.25.1.226
UR  - https://pubmed.ncbi.nlm.nih.gov/6077976/
ID  - 6077976
ER  -