| article html file updated | 6 February 2020 12:52 CET | Update | https://www.mdpi.com/1996-1073/7/10/6620 |
| article html file updated | 7 May 2019 07:03 CEST | Update | N/A |
| article html file updated | 22 March 2019 02:41 CET | Update | N/A |
| article html file updated | 20 August 2015 23:16 CEST | Update | N/A |
| article html file updated | 10 November 2014 11:17 CET | Original file | N/A |
| article xml file uploaded | 10 November 2014 11:17 CET | Original file | https://www.mdpi.com/1996-1073/7/10/6620/xml |
| article pdf uploaded. | 16 October 2014 10:42 CEST | Version of Record | https://www.mdpi.com/1996-1073/7/10/6620/pdf |
