| article html file updated | 7 February 2020 21:01 CET | Update | https://www.mdpi.com/2072-4292/9/1/50 |
| article html file updated | 22 September 2019 19:16 CEST | Update | - |
| article html file updated | 4 May 2019 16:16 CEST | Update | - |
| article html file updated | 8 February 2017 10:27 CET | Update | - |
| article html file updated | 9 January 2017 09:59 CET | Original file | - |
| article xml uploaded. | 9 January 2017 09:58 CET | Original file | https://www.mdpi.com/2072-4292/9/1/50/xml |
| article pdf uploaded. | 9 January 2017 09:58 CET | Updated version of record | https://www.mdpi.com/2072-4292/9/1/50/pdf |
| article pdf uploaded. | 8 January 2017 10:37 CET | Version of Record | https://www.mdpi.com/2072-4292/9/1/50/pdf-vor |
