| article html file updated | 7 February 2020 23:40 CET | Update | https://www.mdpi.com/2073-4360/9/2/71 |
| article html file updated | 23 September 2019 09:28 CEST | Update | - |
| article html file updated | 4 May 2019 10:43 CEST | Update | - |
| article html file updated | 20 March 2019 06:41 CET | Update | - |
| article html file updated | 1 March 2017 11:16 CET | Update | - |
| article html file updated | 17 February 2017 14:41 CET | Original file | - |
| article xml uploaded. | 17 February 2017 14:40 CET | Original file | https://www.mdpi.com/2073-4360/9/2/71/xml |
| article pdf uploaded. | 17 February 2017 14:40 CET | Version of Record | https://www.mdpi.com/2073-4360/9/2/71/pdf |
