| article html file updated | 5 August 2020 05:15 CEST | Original file | https://www.mdpi.com/2411-9660/4/3/30 |
| article pdf uploaded. | 5 August 2020 05:14 CEST | Version of Record | https://www.mdpi.com/2411-9660/4/3/30/pdf |
| article xml uploaded. | 5 August 2020 05:14 CEST | Update | https://www.mdpi.com/2411-9660/4/3/30/xml |
| article xml file uploaded | 5 August 2020 05:14 CEST | Original file | N/A |
