SAE Mobilus includes citations to conference papers and full text for technical papers (1906-present) that are difficult to find anywhere else. While this database's focus is on automotive engineering, it includes some non-automotive injury biomechanics papers.
Please note that if you find these papers in Google Scholar, even from on campus, you won't see the "UBC eLinks" that take you to the full paper. You must search SAE Mobilus directly.
To find other papers, such as from IRCOBI or Stapp, see this guide's Finding Full Text.