| article html file updated | 25 January 2021 05:12 CET | Original file | https://www.mdpi.com/2223-7747/10/2/226 |
| article pdf uploaded. | 25 January 2021 05:11 CET | Version of Record | https://www.mdpi.com/2223-7747/10/2/226/pdf |
| article xml uploaded. | 25 January 2021 05:11 CET | Update | https://www.mdpi.com/2223-7747/10/2/226/xml |
| article xml file uploaded | 25 January 2021 05:11 CET | Original file | - |
