| article html file updated | 8 February 2020 06:52 CET | Update | https://www.mdpi.com/2072-6643/9/6/551 |
| article html file updated | 25 September 2019 01:12 CEST | Update | N/A |
| article html file updated | 3 May 2019 20:06 CEST | Update | N/A |
| article html file updated | 29 June 2017 11:41 CEST | Update | N/A |
| article html file updated | 27 May 2017 10:26 CEST | Original file | N/A |
| article xml uploaded. | 27 May 2017 10:25 CEST | Update | https://www.mdpi.com/2072-6643/9/6/551/xml |
| article pdf uploaded. | 27 May 2017 10:25 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/6/551/pdf |
