| article html file updated | 7 February 2020 11:22 CET | Update | https://www.mdpi.com/1996-1073/9/7/522 |
| article html file updated | 5 May 2019 10:45 CEST | Update | - |
| article html file updated | 27 March 2019 09:40 CET | Update | - |
| article html file updated | 27 July 2016 09:49 CEST | Update | - |
| article html file updated | 8 July 2016 08:08 CEST | Original file | - |
| article xml uploaded. | 8 July 2016 08:06 CEST | Original file | https://www.mdpi.com/1996-1073/9/7/522/xml |
| article pdf uploaded. | 8 July 2016 08:06 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/7/522/pdf |
