| article html file updated | 11 February 2020 04:54 CET | Update | https://www.mdpi.com/2504-5377/3/1/4 |
| article html file updated | 12 October 2019 09:32 CEST | Update | - |
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| article html file updated | 23 December 2018 06:14 CET | Original file | - |
| article pdf uploaded. | 23 December 2018 06:12 CET | Version of Record | https://www.mdpi.com/2504-5377/3/1/4/pdf |
| article xml uploaded. | 23 December 2018 06:12 CET | Update | https://www.mdpi.com/2504-5377/3/1/4/xml |
| article xml file uploaded | 23 December 2018 06:12 CET | Original file | - |
