| article html file updated | 7 February 2020 14:58 CET | Update | https://www.mdpi.com/2073-4441/8/9/401 |
| article html file updated | 5 May 2019 04:07 CEST | Update | - |
| article html file updated | 28 September 2016 07:32 CEST | Update | - |
| article html file updated | 14 September 2016 08:44 CEST | Original file | - |
| article xml uploaded. | 14 September 2016 08:42 CEST | Update | https://www.mdpi.com/2073-4441/8/9/401/xml |
| article xml uploaded. | 14 September 2016 08:42 CEST | Original file | - |
| article pdf uploaded. | 14 September 2016 08:42 CEST | Version of Record | https://www.mdpi.com/2073-4441/8/9/401/pdf |
