| article html file updated | 8 February 2020 17:51 CET | Update | https://www.mdpi.com/2305-7084/1/2/8 |
| article html file updated | 27 September 2019 13:44 CEST | Update | - |
| article html file updated | 2 May 2019 22:38 CEST | Update | - |
| article html file updated | 10 October 2017 13:39 CEST | Original file | - |
| article xml uploaded. | 10 October 2017 13:38 CEST | Original file | https://www.mdpi.com/2305-7084/1/2/8/xml |
| article pdf uploaded. | 10 October 2017 13:38 CEST | Updated version of record | https://www.mdpi.com/2305-7084/1/2/8/pdf |
| article pdf uploaded. | 5 October 2017 13:47 CEST | Version of Record | https://www.mdpi.com/2305-7084/1/2/8/pdf-vor |
