| article html file updated | 23 March 2021 08:52 CET | Original file | https://www.mdpi.com/2309-608X/7/3/239 |
| article pdf uploaded. | 23 March 2021 08:51 CET | Version of Record | https://www.mdpi.com/2309-608X/7/3/239/pdf |
| article xml uploaded. | 23 March 2021 08:51 CET | Update | https://www.mdpi.com/2309-608X/7/3/239/xml |
| article xml file uploaded | 23 March 2021 08:51 CET | Original file | - |
