| article html file updated | 9 February 2020 07:35 CET | Update | https://www.mdpi.com/2218-2004/6/1/8 |
| article html file updated | 1 October 2019 00:54 CEST | Update | - |
| article html file updated | 1 May 2019 16:24 CEST | Update | - |
| article html file updated | 17 April 2019 15:51 CEST | Update | - |
| article html file updated | 29 March 2019 01:25 CET | Update | - |
| article html file updated | 26 March 2018 15:30 CEST | Update | - |
| article html file updated | 25 February 2018 09:48 CET | Original file | - |
| article xml uploaded. | 25 February 2018 09:47 CET | Original file | https://www.mdpi.com/2218-2004/6/1/8/xml |
| article pdf uploaded. | 25 February 2018 09:47 CET | Version of Record | https://www.mdpi.com/2218-2004/6/1/8/pdf |
