| article html file updated | 12 February 2020 01:52 CET | Update | https://www.mdpi.com/2227-7102/9/2/69 |
| article html file updated | 17 October 2019 11:17 CEST | Update | - |
| article html file updated | 4 July 2019 17:51 CEST | Update | - |
| article html file updated | 25 April 2019 19:12 CEST | Update | - |
| article html file updated | 11 April 2019 14:38 CEST | Update | - |
| article html file updated | 10 April 2019 09:23 CEST | Update | - |
| article html file updated | 30 March 2019 10:44 CET | Original file | - |
| article pdf uploaded. | 30 March 2019 10:43 CET | Version of Record | https://www.mdpi.com/2227-7102/9/2/69/pdf |
| article xml uploaded. | 30 March 2019 10:43 CET | Update | https://www.mdpi.com/2227-7102/9/2/69/xml |
| article xml file uploaded | 30 March 2019 10:43 CET | Original file | - |
