| article html file updated | 14 February 2020 09:29 CET | Update | https://www.mdpi.com/2227-7102/9/4/272 |
| article html file updated | 14 November 2019 06:35 CET | Original file | - |
| article pdf uploaded. | 14 November 2019 06:34 CET | Version of Record | https://www.mdpi.com/2227-7102/9/4/272/pdf |
| article xml uploaded. | 14 November 2019 06:34 CET | Update | https://www.mdpi.com/2227-7102/9/4/272/xml |
| article xml file uploaded | 14 November 2019 06:34 CET | Original file | - |
