| article html file updated | 21 June 2020 09:57 CEST | Original file | https://www.mdpi.com/2076-0787/9/2/53 |
| article pdf uploaded. | 21 June 2020 09:55 CEST | Version of Record | https://www.mdpi.com/2076-0787/9/2/53/pdf |
| article xml uploaded. | 21 June 2020 09:55 CEST | Update | https://www.mdpi.com/2076-0787/9/2/53/xml |
| article xml file uploaded | 21 June 2020 09:55 CEST | Original file | - |
