| article html file updated | 19 February 2020 12:59 CET | Original file | https://www.mdpi.com/2071-1050/12/4/1554 |
| article pdf uploaded. | 19 February 2020 12:58 CET | Version of Record | https://www.mdpi.com/2071-1050/12/4/1554/pdf |
| article xml uploaded. | 19 February 2020 12:58 CET | Update | https://www.mdpi.com/2071-1050/12/4/1554/xml |
| article xml file uploaded | 19 February 2020 12:58 CET | Original file | N/A |
