| article html file updated | 7 February 2020 15:17 CET | Update | https://www.mdpi.com/2073-4425/7/9/67 |
| article html file updated | 5 May 2019 03:33 CEST | Update | - |
| article html file updated | 26 September 2016 10:56 CEST | Update | - |
| article html file updated | 21 September 2016 10:12 CEST | Original file | - |
| article xml uploaded. | 21 September 2016 10:11 CEST | Update | https://www.mdpi.com/2073-4425/7/9/67/xml |
| article xml uploaded. | 21 September 2016 10:11 CEST | Original file | - |
| article pdf uploaded. | 21 September 2016 10:11 CEST | Version of Record | https://www.mdpi.com/2073-4425/7/9/67/pdf |
