| article html file updated | 7 February 2020 12:25 CET | Update | https://www.mdpi.com/1996-1073/9/8/591 |
| article html file updated | 5 May 2019 08:49 CEST | Update | - |
| article html file updated | 27 March 2019 11:37 CET | Update | - |
| article html file updated | 25 August 2016 11:24 CEST | Update | - |
| article html file updated | 28 July 2016 11:14 CEST | Original file | - |
| article xml uploaded. | 28 July 2016 11:13 CEST | Update | https://www.mdpi.com/1996-1073/9/8/591/xml |
| article pdf uploaded. | 28 July 2016 11:13 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/8/591/pdf |
