| article pdf uploaded. | 16 January 2020 03:31 CET | Updated version of record | https://www.mdpi.com/2504-3900/16/1/58/pdf |
| article xml file uploaded | 16 January 2020 03:31 CET | Update | - |
| article pdf uploaded. | 3 September 2019 11:07 CEST | Version of Record | https://www.mdpi.com/2504-3900/16/1/58/pdf-vor |
| article xml file uploaded | 3 September 2019 11:07 CEST | Original file | - |
