| article html file updated | 5 February 2020 13:54 CET | Update | https://www.mdpi.com/1999-4915/2/3/731 |
| article html file updated | 9 May 2019 07:41 CEST | Update | - |
| article html file updated | 19 March 2019 22:58 CET | Update | - |
| article html file updated | 16 June 2015 08:43 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/1999-4915/2/3/731/xml |
| article html file updated | 6 February 2013 16:51 CET | Update | - |
| article html file updated | 5 February 2013 21:01 CET | Update | - |
| article html file updated | 28 January 2013 18:35 CET | Update | - |
| article html file updated | 25 January 2013 21:24 CET | Update | - |
| article html file updated | 21 January 2013 21:34 CET | Update | - |
| article html file updated | 18 January 2013 03:14 CET | Original file | - |
