| article html file updated | 10 February 2020 11:11 CET | Update | https://www.mdpi.com/1660-4601/15/9/2021 |
| article html file updated | 7 October 2019 22:23 CEST | Update | - |
| article html file updated | 29 April 2019 05:14 CEST | Update | - |
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| article html file updated | 27 September 2018 12:22 CEST | Update | - |
| article html file updated | 15 September 2018 12:41 CEST | Original file | - |
| article pdf uploaded. | 15 September 2018 12:40 CEST | Version of Record | https://www.mdpi.com/1660-4601/15/9/2021/pdf |
| article xml uploaded. | 15 September 2018 12:40 CEST | Update | https://www.mdpi.com/1660-4601/15/9/2021/xml |
| article xml file uploaded | 15 September 2018 12:40 CEST | Original file | - |
