| article html file updated | 9 February 2020 09:08 CET | Update | https://www.mdpi.com/2310-2861/4/1/21 |
| article html file updated | 1 October 2019 09:47 CEST | Update | - |
| article html file updated | 1 May 2019 13:13 CEST | Update | - |
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| article html file updated | 29 March 2019 05:02 CET | Update | - |
| article html file updated | 8 March 2018 16:30 CET | Original file | - |
| article xml uploaded. | 8 March 2018 16:29 CET | Original file | https://www.mdpi.com/2310-2861/4/1/21/xml |
| article pdf uploaded. | 8 March 2018 16:29 CET | Version of Record | https://www.mdpi.com/2310-2861/4/1/21/pdf |
