| article html file updated | 8 February 2020 07:32 CET | Update | https://www.mdpi.com/2073-4360/9/6/207 |
| article html file updated | 25 September 2019 04:33 CEST | Update | - |
| article html file updated | 3 May 2019 18:51 CEST | Update | - |
| article html file updated | 18 March 2019 05:54 CET | Update | - |
| article html file updated | 28 June 2017 14:19 CEST | Update | - |
| article html file updated | 6 June 2017 07:39 CEST | Original file | - |
| article xml uploaded. | 6 June 2017 07:38 CEST | Update | https://www.mdpi.com/2073-4360/9/6/207/xml |
| article pdf uploaded. | 6 June 2017 07:38 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/6/207/pdf |
