| article html file updated | 7 February 2020 18:26 CET | Update | https://www.mdpi.com/2073-8994/8/11/137 |
| article html file updated | 4 May 2019 21:43 CEST | Update | - |
| article html file updated | 30 November 2016 06:52 CET | Update | - |
| article html file updated | 23 November 2016 07:57 CET | Original file | - |
| article xml uploaded. | 23 November 2016 07:56 CET | Update | https://www.mdpi.com/2073-8994/8/11/137/xml |
| article xml uploaded. | 23 November 2016 07:56 CET | Original file | - |
| article pdf uploaded. | 23 November 2016 07:56 CET | Version of Record | https://www.mdpi.com/2073-8994/8/11/137/pdf |
