Wikipedia on its own is never a proper reference, the references below the article are the evidence you're looking for.
Here is a longer list of references:
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Suneson A, Hansson HA, Seeman T: Pressure Wave Injuries to the Nervous System Caused by High Energy Missile Extremity Impact: Part I. Local and Distant Effects on the Peripheral Nervous System. A Light and Electron Microscopic Study on Pigs. The Journal of Trauma. 30(3):281-294; 1990.
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http://arxiv.org/ftp/physics/papers/0701/0701267.pdf
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Suneson A, Hansson HA, Seeman T: Pressure Wave Injuries to the Nervous System Caused by High Energy Missile extremity Impact: Part II. Distant Effects on the Central Nervous System. A Light and Electron Microscopic Study on Pigs. The Journal of Trauma. 30(3):295-306; 1990.
Courtney A, Courtney M: Links between traumatic brain injury and ballistic pressure waves originating in the thoracic cavity and extremities. Brain Injury 21(7): 657-662, 2007. Pre-print:
http://www.ballisticstestinggroup.org/tbipwave.pdf
Courtney M, Courtney A: Review of criticisms of ballistic pressure wave experiments, the Strasbourg goat tests, and the Marshall and Sanow data.
http://arxiv.org/ftp/physics/papers/0701/0701268.pdf
Courtney M, Courtney A: Relative incapacitation contributions of pressure wave and wound channel in the Marshall and Sanow data set.
http://arxiv.org/ftp/physics/papers/0701/0701266.pdf
Courtney M, Courtney A: A method for testing handgun bullets in deer.
http://arxiv.org/ftp/physics/papers/0702/0702107.pdf
Suneson A, Hansson HA, Seeman T: Peripheral High-Energy Missile Hits Cause Pressure Changes and Damage to the Nervous System: Experimental Studies on Pigs. The Journal of Trauma. 27(7):782-789; 1987. Suneson A, Hansson HA, Seeman T: Central and Peripheral Nervous Damage Following High-Energy Missile Wounds in the Thigh. The Journal of Trauma. 28(1 Supplement):S197-S203; January 1988.
Courtney M, Courtney A, Experimental Observations of Incapacitation via Ballistic Pressure Wave without a Wound Channel, 2007. Pre-print:
http://www.ballisticstestinggroup.org/lotor.pdf
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