Friedl, K. E., Moore, R. J., Martinez-Lopez, L. E., Vogel, J. A., Askew, E. W., Marchitelli, L. J., . . . Gordon, C. C. (1994). Lower limit of body fat in healthy active men. Journal of applied physiology, 77(2), S. 933-940.

Friedl, Karl E., Robert J. Moore, Lester E. Martinez-Lopez, James A. Vogel, E. Wayne Askew, Louis J. Marchitelli, Reed W. Hoyt, and Claire C. Gordon. "Lower Limit of Body Fat in Healthy Active Men." Journal of Applied Physiology 77, no. 2 (1994): S. 933-940.

Friedl, Karl E., et al. "Lower Limit of Body Fat in Healthy Active Men." Journal of Applied Physiology 77.2 (1994): S. 933-940.