| article html file updated | 5 February 2020 19:11 CET | Update | https://www.mdpi.com/2072-6694/4/1/31 |
| article html file updated | 8 May 2019 20:51 CEST | Update | - |
| article html file updated | 25 March 2019 08:54 CET | Update | - |
| article html file updated | 16 June 2015 21:15 CEST | Update | - |
| article html file updated | 22 October 2014 11:21 CEST | Update | - |
| article xml file uploaded | 22 October 2014 11:21 CEST | Update | https://www.mdpi.com/2072-6694/4/1/31/xml |
| article html file updated | 7 February 2013 09:51 CET | Update | - |
| article html file updated | 7 February 2013 00:22 CET | Update | - |
| article html file updated | 6 February 2013 05:39 CET | Update | - |
| article html file updated | 1 February 2013 09:32 CET | Update | - |
| article xml file uploaded | 1 February 2013 09:32 CET | Original file | - |
| article html file updated | 29 January 2013 01:24 CET | Update | - |
| article html file updated | 26 January 2013 07:38 CET | Update | - |
| article html file updated | 23 January 2013 08:08 CET | Original file | - |
