| article html file updated | 8 February 2020 06:55 CET | Update | https://www.mdpi.com/2072-6643/9/6/554 |
| article html file updated | 25 September 2019 01:30 CEST | Update | - |
| article html file updated | 3 May 2019 20:00 CEST | Update | - |
| article html file updated | 29 June 2017 11:42 CEST | Update | - |
| article html file updated | 28 May 2017 09:16 CEST | Original file | - |
| article xml uploaded. | 28 May 2017 09:15 CEST | Original file | https://www.mdpi.com/2072-6643/9/6/554/xml |
| article pdf uploaded. | 28 May 2017 09:15 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/6/554/pdf |
