| article html file updated | 8 February 2020 08:46 CET | Update | https://www.mdpi.com/2073-4360/9/6/237 |
| article html file updated | 25 September 2019 10:57 CEST | Update | - |
| article html file updated | 3 May 2019 16:32 CEST | Update | - |
| article html file updated | 18 March 2019 06:02 CET | Update | - |
| article html file updated | 28 June 2017 14:26 CEST | Update | - |
| article html file updated | 20 June 2017 13:55 CEST | Original file | - |
| article xml uploaded. | 20 June 2017 13:54 CEST | Update | https://www.mdpi.com/2073-4360/9/6/237/xml |
| article pdf uploaded. | 20 June 2017 13:54 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/6/237/pdf |
