Timpka, S., Petersson, I. F., Rylance, R., Kedza, L., & Englund, M. (2012). Performance in Physical Education and Health Impairment 30 Years Later—A Community Based Cohort Study. Public Library of Science.

Timpka, Simon, Ingemar F. Petersson, Rebecca Rylance, Ljuba Kedza, a Martin Englund. Performance in Physical Education and Health Impairment 30 Years Later—A Community Based Cohort Study. Public Library of Science, 2012.

Timpka, Simon, et al. Performance in Physical Education and Health Impairment 30 Years Later—A Community Based Cohort Study. Public Library of Science, 2012.