1. The statistical significance of simple structure in factor analysis;Bargmann;Frankfurt am Main. Hochschule Pedagogische Forschung,1953
2. Personality factors in the Eysenck Personality Questionnaire;Barrett;Person. individ. Diff.,1980
3. The observation to variable ratio in factor analyses;Barrett;Person. Group Behav.,1980
4. Radial parcel factor analysis;Barrett;Person. individ. Diff.,1981
5. Factor extraction: an examination of three methods;Barrett;Person. Group Behav.,1982