| article html file updated | 7 February 2020 19:34 CET | Update | https://www.mdpi.com/2073-4409/5/4/45 |
| article html file updated | 22 September 2019 11:17 CEST | Update | - |
| article html file updated | 4 May 2019 19:20 CEST | Update | - |
| article html file updated | 27 October 2017 09:09 CEST | Update | - |
| article html file updated | 28 December 2016 11:37 CET | Update | - |
| article html file updated | 14 December 2016 09:39 CET | Original file | - |
| article xml uploaded. | 14 December 2016 09:37 CET | Original file | https://www.mdpi.com/2073-4409/5/4/45/xml |
| article pdf uploaded. | 14 December 2016 09:37 CET | Version of Record | https://www.mdpi.com/2073-4409/5/4/45/pdf |
