| article html file updated | 7 February 2020 20:45 CET | Update | https://www.mdpi.com/2073-4360/9/1/11 |
| article html file updated | 22 September 2019 17:39 CEST | Update | - |
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| article html file updated | 7 February 2017 10:26 CET | Update | - |
| article html file updated | 4 January 2017 08:56 CET | Original file | - |
| article xml uploaded. | 4 January 2017 08:54 CET | Update | https://www.mdpi.com/2073-4360/9/1/11/xml |
| article pdf uploaded. | 4 January 2017 08:54 CET | Version of Record | https://www.mdpi.com/2073-4360/9/1/11/pdf |
