| article html file updated | 7 February 2020 09:43 CET | Update | https://www.mdpi.com/1996-1073/9/6/435 |
| article html file updated | 5 May 2019 13:47 CEST | Update | - |
| article html file updated | 27 March 2019 06:38 CET | Update | - |
| article html file updated | 28 June 2016 09:30 CEST | Update | - |
| article html file updated | 6 June 2016 03:57 CEST | Update | - |
| article xml uploaded. | 6 June 2016 03:55 CEST | Update | https://www.mdpi.com/1996-1073/9/6/435/xml |
| article pdf uploaded. | 6 June 2016 03:55 CEST | Updated version of record | https://www.mdpi.com/1996-1073/9/6/435/pdf |
| article html file updated | 3 June 2016 10:54 CEST | Original file | - |
| article pdf uploaded. | 3 June 2016 10:53 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/6/435/pdf-vor |
