| article html file updated | 7 February 2020 23:00 CET | Update | https://www.mdpi.com/2073-4336/8/1/12 |
| article html file updated | 23 September 2019 05:50 CEST | Update | - |
| article html file updated | 4 May 2019 12:02 CEST | Update | - |
| article pdf uploaded. | 20 February 2017 12:29 CET | Updated version of record | https://www.mdpi.com/2073-4336/8/1/12/pdf |
| article html file updated | 20 February 2017 12:25 CET | Original file | - |
| article xml uploaded. | 20 February 2017 12:24 CET | Update | https://www.mdpi.com/2073-4336/8/1/12/xml |
| article xml uploaded. | 20 February 2017 12:24 CET | Original file | - |
| article pdf uploaded. | 9 February 2017 16:24 CET | Version of Record | https://www.mdpi.com/2073-4336/8/1/12/pdf-vor |
