| article html file updated | 5 February 2020 14:14 CET | Update | https://www.mdpi.com/1999-4915/2/4/1011 |
| article html file updated | 9 May 2019 06:58 CEST | Update | - |
| article html file updated | 19 March 2019 23:47 CET | Update | - |
| article html file updated | 16 June 2015 09:20 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/1999-4915/2/4/1011/xml |
| article html file updated | 6 February 2013 17:17 CET | Update | - |
| article html file updated | 5 February 2013 21:26 CET | Update | - |
| article html file updated | 28 January 2013 18:58 CET | Update | - |
| article html file updated | 25 January 2013 21:55 CET | Update | - |
| article html file updated | 21 January 2013 23:06 CET | Update | - |
| article html file updated | 18 January 2013 05:24 CET | Original file | - |
