| article html file updated | 11 February 2020 15:16 CET | Update | https://www.mdpi.com/2223-7747/8/2/40 |
| article html file updated | 14 October 2019 20:00 CEST | Update | - |
| article html file updated | 26 April 2019 18:11 CEST | Update | - |
| article html file updated | 12 April 2019 14:09 CEST | Update | - |
| article html file updated | 3 April 2019 18:44 CEST | Update | - |
| article html file updated | 5 March 2019 05:57 CET | Update | - |
| article html file updated | 28 February 2019 21:11 CET | Update | - |
| article html file updated | 14 February 2019 08:30 CET | Original file | - |
| article pdf uploaded. | 14 February 2019 08:29 CET | Updated version of record | https://www.mdpi.com/2223-7747/8/2/40/pdf |
| article xml uploaded. | 14 February 2019 08:29 CET | Update | https://www.mdpi.com/2223-7747/8/2/40/xml |
| article xml file uploaded | 14 February 2019 08:29 CET | Update | - |
| article pdf uploaded. | 12 February 2019 11:57 CET | Version of Record | https://www.mdpi.com/2223-7747/8/2/40/pdf-vor |
| article xml file uploaded | 12 February 2019 11:57 CET | Original file | - |
