| article html file updated | 7 February 2020 15:17 CET | Update | https://www.mdpi.com/2073-4441/8/9/411 |
| article html file updated | 5 May 2019 03:34 CEST | Update | - |
| article html file updated | 28 September 2016 07:35 CEST | Update | - |
| article html file updated | 21 September 2016 09:18 CEST | Original file | - |
| article xml uploaded. | 21 September 2016 09:17 CEST | Update | https://www.mdpi.com/2073-4441/8/9/411/xml |
| article xml uploaded. | 21 September 2016 09:17 CEST | Original file | - |
| article pdf uploaded. | 21 September 2016 09:17 CEST | Version of Record | https://www.mdpi.com/2073-4441/8/9/411/pdf |
