| article html file updated | 6 February 2020 05:24 CET | Update | https://www.mdpi.com/2072-6694/5/4/1456 |
| article html file updated | 20 September 2019 02:56 CEST | Update | N/A |
| article html file updated | 7 May 2019 22:24 CEST | Update | N/A |
| article html file updated | 21 March 2019 07:17 CET | Update | N/A |
| article html file updated | 19 August 2015 09:08 CEST | Update | N/A |
| article html file updated | 6 January 2014 11:09 CET | Original file | N/A |
| article xml file uploaded | 6 January 2014 11:09 CET | Original file | https://www.mdpi.com/2072-6694/5/4/1456/xml |
| article pdf uploaded. | 7 November 2013 15:09 CET | Version of Record | https://www.mdpi.com/2072-6694/5/4/1456/pdf |
