Hansen, H. S., Froberg, K., Nielsen, J. R., & Hyldebrandt, N. (1989). A new approach to assessing maximal aerobic power in children: The Odense School Child Study. European journal of applied physiology, 58(6), S. 618-624. doi:10.1007/BF00418508

Hansen, Henrik S., Karsten Froberg, Jens Rokkedal Nielsen, and Niels Hyldebrandt. "A New Approach to Assessing Maximal Aerobic Power in Children: The Odense School Child Study." European Journal of Applied Physiology 58, no. 6 (1989): S. 618-624.

Hansen, Henrik S., Karsten Froberg, Jens Rokkedal Nielsen, and Niels Hyldebrandt. "A New Approach to Assessing Maximal Aerobic Power in Children: The Odense School Child Study." European Journal of Applied Physiology 58.6 (1989): S. 618-624.