| article html file updated | 8 February 2020 07:00 CET | Update | https://www.mdpi.com/2073-4360/9/6/198 |
| article html file updated | 3 May 2019 19:51 CEST | Update | - |
| article html file updated | 18 March 2019 05:52 CET | Update | - |
| article html file updated | 28 June 2017 14:18 CEST | Update | - |
| article html file updated | 30 May 2017 11:41 CEST | Original file | - |
| article xml uploaded. | 30 May 2017 11:39 CEST | Original file | https://www.mdpi.com/2073-4360/9/6/198/xml |
| article pdf uploaded. | 30 May 2017 11:39 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/6/198/pdf |
