| article html file updated | 28 September 2020 12:11 CEST | Original file | https://www.mdpi.com/2297-8739/7/4/50 |
| article pdf uploaded. | 28 September 2020 12:10 CEST | Version of Record | https://www.mdpi.com/2297-8739/7/4/50/pdf |
| article xml uploaded. | 28 September 2020 12:10 CEST | Update | https://www.mdpi.com/2297-8739/7/4/50/xml |
| article xml file uploaded | 28 September 2020 12:10 CEST | Original file | N/A |
