| article html file updated | 5 February 2020 14:08 CET | Update | https://www.mdpi.com/1999-4915/2/4/961 |
| article html file updated | 9 May 2019 07:12 CEST | Update | - |
| article html file updated | 19 March 2019 23:32 CET | Update | - |
| article html file updated | 16 June 2015 09:09 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/1999-4915/2/4/961/xml |
| article html file updated | 6 February 2013 17:09 CET | Update | - |
| article html file updated | 5 February 2013 21:19 CET | Update | - |
| article html file updated | 28 January 2013 18:52 CET | Update | - |
| article html file updated | 25 January 2013 21:47 CET | Update | - |
| article html file updated | 21 January 2013 22:38 CET | Update | - |
| article html file updated | 18 January 2013 04:53 CET | Original file | - |
