| article html file updated | 6 February 2020 05:58 CET | Update | https://www.mdpi.com/2072-6694/5/4/1643 |
| article html file updated | 7 May 2019 21:18 CEST | Update | - |
| article html file updated | 21 March 2019 08:47 CET | Update | - |
| article html file updated | 19 August 2015 12:21 CEST | Update | - |
| article html file updated | 6 January 2014 11:10 CET | Original file | - |
| article xml file uploaded | 6 January 2014 11:10 CET | Original file | https://www.mdpi.com/2072-6694/5/4/1643/xml |
| article pdf uploaded. | 4 December 2013 13:33 CET | Version of Record | https://www.mdpi.com/2072-6694/5/4/1643/pdf |
