| article html file updated | 27 August 2021 14:52 CEST | Original file | https://www.mdpi.com/2311-5521/6/9/304 |
| article pdf uploaded. | 27 August 2021 14:51 CEST | Version of Record | https://www.mdpi.com/2311-5521/6/9/304/pdf |
| article xml uploaded. | 27 August 2021 14:51 CEST | Update | https://www.mdpi.com/2311-5521/6/9/304/xml |
| article xml file uploaded | 27 August 2021 14:51 CEST | Original file | N/A |
