| article html file updated | 14 February 2020 08:31 CET | Update | https://www.mdpi.com/2227-7080/7/4/81 |
| article html file updated | 11 November 2019 07:45 CET | Original file | N/A |
| article pdf uploaded. | 11 November 2019 07:44 CET | Version of Record | https://www.mdpi.com/2227-7080/7/4/81/pdf |
| article xml uploaded. | 11 November 2019 07:44 CET | Update | https://www.mdpi.com/2227-7080/7/4/81/xml |
| article xml file uploaded | 11 November 2019 07:44 CET | Original file | N/A |
