| article html file updated | 7 February 2020 18:24 CET | Update | https://www.mdpi.com/1996-1073/9/11/977 |
| article html file updated | 4 May 2019 21:45 CEST | Update | - |
| article html file updated | 30 November 2016 06:10 CET | Update | - |
| article html file updated | 22 November 2016 12:07 CET | Original file | - |
| article xml uploaded. | 22 November 2016 12:06 CET | Update | https://www.mdpi.com/1996-1073/9/11/977/xml |
| article xml uploaded. | 22 November 2016 12:06 CET | Original file | - |
| article pdf uploaded. | 22 November 2016 12:06 CET | Version of Record | https://www.mdpi.com/1996-1073/9/11/977/pdf |
