C. Stromberg

The structure and dynamics of worry: theory, measurement, and cross-national replications.

S. Schwartz, L. Sagiv, K. Boehnke, 1998, Journal of personality.

Reflecting the World “Out There”: A Cross-Cultural Perspective on Worries, Values and Well-Being

M. Regmi, B. O. Richmond, K. Boehnke, 1998 .