| article html file updated | 9 February 2020 00:23 CET | Update | https://www.mdpi.com/2079-7737/6/4/46 |
| article html file updated | 29 September 2019 07:01 CEST | Update | - |
| article html file updated | 2 May 2019 07:54 CEST | Update | - |
| article html file updated | 18 April 2019 05:43 CEST | Update | - |
| article html file updated | 2 January 2018 20:32 CET | Update | - |
| article html file updated | 18 December 2017 08:19 CET | Original file | - |
| article xml uploaded. | 18 December 2017 08:18 CET | Original file | https://www.mdpi.com/2079-7737/6/4/46/xml |
| article pdf uploaded. | 18 December 2017 08:18 CET | Version of Record | https://www.mdpi.com/2079-7737/6/4/46/pdf |
