| article html file updated | 7 February 2020 20:34 CET | Update | https://www.mdpi.com/2072-4292/9/1/21 |
| article html file updated | 22 September 2019 16:44 CEST | Update | - |
| article html file updated | 4 May 2019 17:15 CEST | Update | - |
| article html file updated | 8 February 2017 10:17 CET | Update | - |
| article html file updated | 30 December 2016 11:48 CET | Original file | - |
| article xml uploaded. | 30 December 2016 11:47 CET | Update | https://www.mdpi.com/2072-4292/9/1/21/xml |
| article xml uploaded. | 30 December 2016 11:47 CET | Original file | - |
| article pdf uploaded. | 30 December 2016 11:47 CET | Version of Record | https://www.mdpi.com/2072-4292/9/1/21/pdf |
