| article html file updated | 8 February 2020 08:27 CET | Update | https://www.mdpi.com/2073-4360/9/6/228 |
| article html file updated | 25 September 2019 09:19 CEST | Update | - |
| article html file updated | 3 May 2019 17:09 CEST | Update | - |
| article html file updated | 18 March 2019 06:00 CET | Update | - |
| article html file updated | 28 June 2017 14:24 CEST | Update | - |
| article html file updated | 16 June 2017 11:07 CEST | Original file | - |
| article xml uploaded. | 16 June 2017 11:05 CEST | Update | https://www.mdpi.com/2073-4360/9/6/228/xml |
| article pdf uploaded. | 16 June 2017 11:05 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/6/228/pdf |
