| article html file updated | 7 February 2020 16:56 CET | Update | https://www.mdpi.com/1996-1073/9/11/871 |
| article html file updated | 5 May 2019 00:33 CEST | Update | - |
| article html file updated | 30 November 2016 05:12 CET | Update | - |
| article html file updated | 25 October 2016 12:04 CEST | Original file | - |
| article xml uploaded. | 25 October 2016 12:02 CEST | Update | https://www.mdpi.com/1996-1073/9/11/871/xml |
| article xml uploaded. | 25 October 2016 12:02 CEST | Original file | - |
| article pdf uploaded. | 25 October 2016 12:02 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/11/871/pdf |
