| article html file updated | 6 February 2020 05:04 CET | Update | https://www.mdpi.com/1996-1073/6/10/5538 |
| article html file updated | 7 May 2019 23:00 CEST | Update | - |
| article html file updated | 21 March 2019 06:24 CET | Update | - |
| article html file updated | 20 July 2017 11:36 CEST | Update | - |
| article html file updated | 20 July 2017 11:34 CEST | Update | - |
| article html file updated | 20 July 2017 11:32 CEST | Original file | - |
| article xml uploaded. | 20 July 2017 11:30 CEST | Original file | https://www.mdpi.com/1996-1073/6/10/5538/xml |
| article pdf uploaded. | 22 October 2013 13:46 CEST | Version of Record | https://www.mdpi.com/1996-1073/6/10/5538/pdf |
