The essentials of mental measurement / by William Brown.

Fechner's legacy in psychology : 150 years of elementary psychophysics / edited by Joshua A. Solomon.

Contributions to the history of psychology. LXXXIII, J.E. Purkinje and Mathias Klotz : who first described "the phenomenon"? / J. Brožek, V. Kuthan, K. Arens.

Roland Harper.

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Psychophysics

Works from the collections

The essentials of mental measurement / by William Brown.

Fechner's legacy in psychology : 150 years of elementary psychophysics / edited by Joshua A. Solomon.

Contributions to the history of psychology. LXXXIII, J.E. Purkinje and Mathias Klotz : who first described "the phenomenon"? / J. Brožek, V. Kuthan, K. Arens.

Roland Harper.