| article html file updated | 6 March 2020 08:20 CET | Update | https://www.mdpi.com/2223-7747/9/2/138 |
| article html file updated | 18 February 2020 06:04 CET | Original file | N/A |
| article pdf uploaded. | 18 February 2020 06:03 CET | Updated version of record | https://www.mdpi.com/2223-7747/9/2/138/pdf |
| article xml uploaded. | 18 February 2020 06:03 CET | Update | https://www.mdpi.com/2223-7747/9/2/138/xml |
| article xml file uploaded | 18 February 2020 06:03 CET | Update | N/A |
| article pdf uploaded. | 22 January 2020 08:59 CET | Version of Record | https://www.mdpi.com/2223-7747/9/2/138/pdf-vor |
| article xml file uploaded | 22 January 2020 08:59 CET | Original file | N/A |
