| dot.gov | National Highway Traffic Safety Administration (NHTSA) |
| tms.org | TMS - The Minerals, Metals & Materials Society |
| sme.org | Society of Manufacturing Engineers |
| nspe.org | National Society of Professional Engineers |
| nist.gov | National Institute of Standards and Technology (NIST) |
| iso.ch | ISO. International Organization for Standardization |
| ieee.org | Institute of Electrical and Electronics Engineers |
| astm.org | ASTM International |
| asme.org | American Society of Mechanical Engineers |
| ansi.org | American National Standards Institute |
| sme.org | www.sme.org/ |
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