| article html file updated | 8 February 2020 19:14 CET | Update | https://www.mdpi.com/2073-4336/8/4/46 |
| article html file updated | 27 September 2019 23:01 CEST | Update | - |
| article html file updated | 2 May 2019 19:28 CEST | Update | - |
| article html file updated | 24 October 2017 08:20 CEST | Original file | - |
| article xml uploaded. | 24 October 2017 08:19 CEST | Original file | https://www.mdpi.com/2073-4336/8/4/46/xml |
| article pdf uploaded. | 24 October 2017 08:19 CEST | Updated version of record | https://www.mdpi.com/2073-4336/8/4/46/pdf |
| article pdf uploaded. | 23 October 2017 14:40 CEST | Version of Record | https://www.mdpi.com/2073-4336/8/4/46/pdf-vor |
