| article html file updated | 8 February 2020 08:37 CET | Update | https://www.mdpi.com/2073-4360/9/6/230 |
| article html file updated | 25 September 2019 10:10 CEST | Update | - |
| article html file updated | 3 May 2019 16:50 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 | 18 June 2017 22:30 CEST | Original file | - |
| article xml uploaded. | 18 June 2017 10:35 CEST | Update | https://www.mdpi.com/2073-4360/9/6/230/xml |
| article pdf uploaded. | 18 June 2017 10:35 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/6/230/pdf |
