| article html file updated | 8 February 2020 07:20 CET | Update | https://www.mdpi.com/2072-4292/9/6/552 |
| article html file updated | 25 September 2019 03:31 CEST | Update | N/A |
| article html file updated | 3 May 2019 19:14 CEST | Update | N/A |
| article html file updated | 30 June 2017 09:36 CEST | Update | N/A |
| article html file updated | 23 June 2017 05:19 CEST | Original file | N/A |
| article xml uploaded. | 23 June 2017 05:18 CEST | Update | https://www.mdpi.com/2072-4292/9/6/552/xml |
| article pdf uploaded. | 2 June 2017 15:38 CEST | Version of Record | https://www.mdpi.com/2072-4292/9/6/552/pdf |
