| article html file updated | 8 February 2020 08:11 CET | Update | https://www.mdpi.com/2072-6643/9/6/597 |
| article html file updated | 25 September 2019 07:51 CEST | Update | - |
| article html file updated | 3 May 2019 17:39 CEST | Update | - |
| article html file updated | 29 June 2017 11:45 CEST | Update | - |
| article html file updated | 13 June 2017 12:51 CEST | Original file | - |
| article xml uploaded. | 13 June 2017 12:50 CEST | Original file | https://www.mdpi.com/2072-6643/9/6/597/xml |
| article pdf uploaded. | 13 June 2017 12:50 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/6/597/pdf |
