| article html file updated | 7 February 2020 20:40 CET | Update | https://www.mdpi.com/2072-4292/9/1/31 |
| article html file updated | 22 September 2019 17:16 CEST | Update | - |
| article html file updated | 4 May 2019 17:02 CEST | Update | - |
| article html file updated | 8 February 2017 10:21 CET | Update | - |
| article html file updated | 6 January 2017 12:15 CET | Original file | - |
| article xml uploaded. | 6 January 2017 12:14 CET | Original file | https://www.mdpi.com/2072-4292/9/1/31/xml |
| article pdf uploaded. | 6 January 2017 12:14 CET | Updated version of record | https://www.mdpi.com/2072-4292/9/1/31/pdf |
| article pdf uploaded. | 2 January 2017 11:26 CET | Version of Record | https://www.mdpi.com/2072-4292/9/1/31/pdf-vor |
