| article html file updated | 8 February 2020 21:40 CET | Update | https://www.mdpi.com/2310-2861/3/4/45 |
| article html file updated | 28 September 2019 14:34 CEST | Update | - |
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| article html file updated | 18 April 2019 11:35 CEST | Update | - |
| article html file updated | 20 November 2017 10:20 CET | Original file | - |
| article xml uploaded. | 20 November 2017 10:19 CET | Original file | https://www.mdpi.com/2310-2861/3/4/45/xml |
| article pdf uploaded. | 20 November 2017 10:19 CET | Version of Record | https://www.mdpi.com/2310-2861/3/4/45/pdf |
