| article html file updated | 7 February 2020 11:03 CET | Update | https://www.mdpi.com/1996-1073/9/7/513 |
| article html file updated | 5 May 2019 11:19 CEST | Update | - |
| article html file updated | 27 March 2019 09:05 CET | Update | - |
| article html file updated | 27 July 2016 09:44 CEST | Update | - |
| article html file updated | 30 June 2016 15:16 CEST | Original file | - |
| article xml uploaded. | 30 June 2016 15:14 CEST | Original file | https://www.mdpi.com/1996-1073/9/7/513/xml |
| article pdf uploaded. | 30 June 2016 15:14 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/7/513/pdf |
