| article html file updated | 6 February 2020 03:26 CET | Update | https://www.mdpi.com/1996-1073/6/8/3706 |
| article html file updated | 8 May 2019 02:27 CEST | Update | - |
| article html file updated | 21 March 2019 01:56 CET | Update | - |
| article html file updated | 20 July 2017 11:39 CEST | Update | - |
| article html file updated | 20 July 2017 11:38 CEST | Update | - |
| article html file updated | 20 July 2017 11:37 CEST | Original file | - |
| article xml uploaded. | 20 July 2017 11:34 CEST | Update | https://www.mdpi.com/1996-1073/6/8/3706/xml |
| article pdf uploaded. | 25 July 2013 11:59 CEST | Version of Record | https://www.mdpi.com/1996-1073/6/8/3706/pdf |
