- Correspondence to Nicholas N Ferenchak, Civil Engineering Department, University of Colorado Denver, 1200 Larimer Street, Denver, CO 80217, USA;
- Received 6 June 2016
- Revised 20 November 2016
- Accepted 1 December 2016
- Published in print 1 December 2017.
- Published online 23 November 2017.
- Published first 10 January 2017.
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