| article html file updated | 7 February 2020 18:58 CET | Update | https://www.mdpi.com/2079-7737/5/4/48 |
| article html file updated | 22 September 2019 08:20 CEST | Update | - |
| article html file updated | 4 May 2019 20:35 CEST | Update | - |
| article html file updated | 28 December 2016 08:48 CET | Update | - |
| article html file updated | 2 December 2016 08:19 CET | Original file | - |
| article xml uploaded. | 2 December 2016 08:18 CET | Original file | https://www.mdpi.com/2079-7737/5/4/48/xml |
| article pdf uploaded. | 2 December 2016 08:18 CET | Version of Record | https://www.mdpi.com/2079-7737/5/4/48/pdf |
