| article html file updated | 7 February 2020 16:02 CET | Update | https://www.mdpi.com/2079-7737/5/4/39 |
| article html file updated | 22 September 2019 02:20 CEST | Update | - |
| article html file updated | 5 May 2019 02:14 CEST | Update | - |
| article html file updated | 28 December 2016 08:45 CET | Update | - |
| article html file updated | 11 October 2016 13:14 CEST | Original file | - |
| article xml uploaded. | 11 October 2016 13:12 CEST | Original file | https://www.mdpi.com/2079-7737/5/4/39/xml |
| article pdf uploaded. | 11 October 2016 13:12 CEST | Updated version of record | https://www.mdpi.com/2079-7737/5/4/39/pdf |
| article pdf uploaded. | 8 October 2016 10:40 CEST | Version of Record | https://www.mdpi.com/2079-7737/5/4/39/pdf-vor |
