| article html file updated | 6 February 2020 00:00 CET | Update | https://www.mdpi.com/2073-4468/2/1/50 |
| article html file updated | 8 May 2019 09:49 CEST | Update | - |
| article html file updated | 20 March 2019 17:12 CET | Update | - |
| article html file updated | 17 June 2015 05:32 CEST | Update | - |
| article html file updated | 24 November 2014 10:50 CET | Update | - |
| article xml file uploaded | 24 November 2014 10:50 CET | Update | https://www.mdpi.com/2073-4468/2/1/50/xml |
| article html file updated | 14 August 2014 11:40 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:40 CEST | Update | - |
| article html file updated | 14 August 2014 11:20 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:20 CEST | Update | - |
| article html file updated | 8 February 2013 09:31 CET | Update | - |
| article html file updated | 7 February 2013 17:50 CET | Update | - |
| article html file updated | 24 January 2013 12:20 CET | Update | - |
| article html file updated | 22 January 2013 15:37 CET | Original file | - |
| article xml uploaded. | 22 January 2013 15:37 CET | Original file | - |
