| article html file updated | 5 February 2020 14:45 CET | Update | https://www.mdpi.com/1999-4915/2/6/1306 |
| article html file updated | 9 May 2019 05:52 CEST | Update | - |
| article html file updated | 20 March 2019 01:01 CET | Update | - |
| article html file updated | 16 June 2015 10:12 CEST | Update | - |
| article html file updated | 14 August 2014 12:06 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:06 CEST | Original file | https://www.mdpi.com/1999-4915/2/6/1306/xml |
| article html file updated | 6 February 2013 17:48 CET | Update | - |
| article html file updated | 5 February 2013 21:55 CET | Update | - |
| article html file updated | 28 January 2013 19:27 CET | Update | - |
| article html file updated | 25 January 2013 22:35 CET | Update | - |
| article html file updated | 22 January 2013 00:59 CET | Update | - |
| article html file updated | 18 January 2013 07:14 CET | Original file | - |
