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| ==External resources== | | ==External resources== |
| https://www.chijournal.org/C390 | | *https://www.chijournal.org/C390 |
| http://www.civil.ryerson.ca/seminar/Papers/Draft%20Design%20manual%20of%20EES%20by%20Tran%20and%20Li%207-24-2015.pdf | | *http://www.civil.ryerson.ca/seminar/Papers/Draft%20Design%20manual%20of%20EES%20by%20Tran%20and%20Li%207-24-2015.pdf |
| ---- | | ---- |