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Lippke, Sonia; Nigg, Claudio R.; Maddock, Jason E. (2012). Health-Promoting and Health-Risk Behaviors: Theory-Driven Analyses of Multiple Health Behavior Change in Three International Samples. International journal of behavioral medicine, 19(1), pp. 1-13. Springer 10.1007/s12529-010-9135-4
Nigg, Claudio R.; Lippke, Sonia; Maddock, Jason E. (2009). Factorial invariance of the theory of planned behavior applied to physical activity across gender, age, and ethnic groups. Psychology of sport and exercise, 10(2), pp. 219-225. Elsevier Science 10.1016/j.psychsport.2008.09.005
