| article html file updated | 8 February 2020 02:13 CET | Update | https://www.mdpi.com/2072-6651/9/4/117 |
| article html file updated | 24 September 2019 00:03 CEST | Update | - |
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| article html file updated | 28 April 2017 11:14 CEST | Update | - |
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| article html file updated | 24 March 2017 22:37 CET | Update | - |
| article html file updated | 24 March 2017 14:45 CET | Original file | - |
| article xml uploaded. | 24 March 2017 14:44 CET | Original file | https://www.mdpi.com/2072-6651/9/4/117/xml |
| article pdf uploaded. | 24 March 2017 14:44 CET | Version of Record | https://www.mdpi.com/2072-6651/9/4/117/pdf |
