Gernhardt, ML (1991). "Development and Evaluation of a Decompression Stress Index Based on Tissue Bubble Dynamics". Doctoral Dissertation. University of Pennsylvania Department of Bioengineering. Philadelphia, PA: Environmental Biomedical Stress Data Center, Institute for Environmental Medicine, University of Pennsylvania. EBSDC-IFEM Report No. 1-1-1991. Diarkibkan daripada yang asal pada 2012-05-23. Dicapai pada 2008-08-29.
Gernhardt, ML (1991). "Development and Evaluation of a Decompression Stress Index Based on Tissue Bubble Dynamics". Doctoral Dissertation. University of Pennsylvania Department of Bioengineering. Philadelphia, PA: Environmental Biomedical Stress Data Center, Institute for Environmental Medicine, University of Pennsylvania. EBSDC-IFEM Report No. 1-1-1991. Diarkibkan daripada yang asal pada 2012-05-23. Dicapai pada 2008-08-29.