| article html file updated | 11 February 2020 01:55 CET | Update | https://www.mdpi.com/2504-5377/2/4/69 |
| article html file updated | 11 October 2019 15:29 CEST | Update | - |
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| article html file updated | 30 December 2018 02:02 CET | Update | - |
| article html file updated | 7 December 2018 15:14 CET | Original file | - |
| article pdf uploaded. | 7 December 2018 15:12 CET | Version of Record | https://www.mdpi.com/2504-5377/2/4/69/pdf |
| article xml uploaded. | 7 December 2018 15:12 CET | Update | https://www.mdpi.com/2504-5377/2/4/69/xml |
| article xml file uploaded | 7 December 2018 15:12 CET | Original file | - |
