| article html file updated | 7 February 2020 14:17 CET | Update | https://www.mdpi.com/2072-6643/8/9/538 |
| article html file updated | 22 September 2019 00:07 CEST | Update | - |
| article html file updated | 5 May 2019 05:24 CEST | Update | - |
| article html file updated | 27 March 2019 15:40 CET | Update | - |
| article html file updated | 27 September 2016 11:34 CEST | Update | - |
| article html file updated | 1 September 2016 10:25 CEST | Original file | - |
| article xml uploaded. | 1 September 2016 10:24 CEST | Original file | https://www.mdpi.com/2072-6643/8/9/538/xml |
| article pdf uploaded. | 1 September 2016 10:24 CEST | Version of Record | https://www.mdpi.com/2072-6643/8/9/538/pdf |
