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Lee, R. E.; Nigg, C. R. (2001). Using Geographic Information Systems (GIS) technology to examine physical activity environments. Annals of behavioral medicine, 23, S118-S118. Springer
Lee, R. E.; Nigg, C. R.; DiClemente, C. C.; Courneya, K. S. (2000). Validating the stages of change for exercise behavior with adolescents. Annals of behavioral medicine, 22, S80-S80. Springer
