| article pdf uploaded. | 7 May 2020 08:57 CEST | Updated version of record | https://www.mdpi.com/2504-3900/17/1/12/pdf |
| article xml file uploaded | 7 May 2020 08:57 CEST | Update | N/A |
| article pdf uploaded. | 18 October 2019 06:01 CEST | Version of Record | https://www.mdpi.com/2504-3900/17/1/12/pdf-vor |
| article xml file uploaded | 18 October 2019 06:01 CEST | Original file | N/A |
