| article html file updated | 8 February 2020 07:22 CET | Update | https://www.mdpi.com/2072-6643/9/6/569 |
| article html file updated | 25 September 2019 03:39 CEST | Update | - |
| article html file updated | 3 May 2019 19:10 CEST | Update | - |
| article html file updated | 29 June 2017 11:43 CEST | Update | - |
| article html file updated | 2 June 2017 15:29 CEST | Original file | - |
| article xml uploaded. | 2 June 2017 15:28 CEST | Original file | https://www.mdpi.com/2072-6643/9/6/569/xml |
| article pdf uploaded. | 2 June 2017 15:28 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/6/569/pdf |
