| article html file updated | 28 July 2020 13:55 CEST | Original file | https://www.mdpi.com/2076-0787/9/3/69 |
| article pdf uploaded. | 28 July 2020 13:54 CEST | Updated version of record | https://www.mdpi.com/2076-0787/9/3/69/pdf |
| article xml uploaded. | 28 July 2020 13:54 CEST | Update | https://www.mdpi.com/2076-0787/9/3/69/xml |
| article xml file uploaded | 28 July 2020 13:54 CEST | Original file | - |
