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| article xml uploaded. | 10 February 2017 13:12 CET | Original file | https://www.mdpi.com/1424-8220/17/2/253/xml |
| article pdf uploaded. | 10 February 2017 13:05 CET | Updated version of record | https://www.mdpi.com/1424-8220/17/2/253/pdf |
| article pdf uploaded. | 27 January 2017 16:06 CET | Version of Record | https://www.mdpi.com/1424-8220/17/2/253/pdf-vor |
