| article html file updated | 7 February 2020 00:26 CET | Update | https://www.mdpi.com/2076-3417/5/4/973 |
| article html file updated | 21 September 2019 05:41 CEST | Update | - |
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| article html file updated | 5 November 2015 11:16 CET | Original file | - |
| article xml file uploaded | 5 November 2015 11:16 CET | Original file | https://www.mdpi.com/2076-3417/5/4/973/xml |
| article pdf uploaded. | 30 October 2015 16:39 CET | Version of Record | https://www.mdpi.com/2076-3417/5/4/973/pdf |
