| article html file updated | 11 February 2020 13:51 CET | Update | https://www.mdpi.com/2227-9067/6/2/22 |
| article html file updated | 14 October 2019 12:03 CEST | Update | - |
| article html file updated | 26 April 2019 21:02 CEST | Update | - |
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| article html file updated | 28 February 2019 14:21 CET | Update | - |
| article html file updated | 5 February 2019 01:54 CET | Original file | - |
| article pdf uploaded. | 4 February 2019 17:03 CET | Updated version of record | https://www.mdpi.com/2227-9067/6/2/22/pdf |
| article xml uploaded. | 4 February 2019 17:03 CET | Update | https://www.mdpi.com/2227-9067/6/2/22/xml |
| article xml file uploaded | 4 February 2019 17:03 CET | Update | - |
| article pdf uploaded. | 4 February 2019 14:49 CET | Version of Record | - |
| article xml file uploaded | 4 February 2019 14:49 CET | Original file | - |
