| article html file updated | 7 February 2020 14:27 CET | Update | https://www.mdpi.com/2073-4360/8/9/331 |
| article html file updated | 5 May 2019 05:04 CEST | Update | - |
| article html file updated | 27 September 2016 11:38 CEST | Update | - |
| article html file updated | 5 September 2016 12:08 CEST | Original file | - |
| article xml uploaded. | 5 September 2016 12:07 CEST | Update | https://www.mdpi.com/2073-4360/8/9/331/xml |
| article xml uploaded. | 5 September 2016 12:07 CEST | Original file | - |
| article pdf uploaded. | 5 September 2016 12:07 CEST | Version of Record | https://www.mdpi.com/2073-4360/8/9/331/pdf |
