| article html file updated | 5 February 2020 14:33 CET | Update | https://www.mdpi.com/1999-4915/2/5/1218 |
| article html file updated | 9 May 2019 06:17 CEST | Update | - |
| article html file updated | 20 March 2019 00:31 CET | Update | - |
| article html file updated | 16 June 2015 09:53 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/1999-4915/2/5/1218/xml |
| article html file updated | 6 February 2013 17:39 CET | Update | - |
| article html file updated | 5 February 2013 21:46 CET | Update | - |
| article html file updated | 28 January 2013 19:18 CET | Update | - |
| article html file updated | 25 January 2013 22:22 CET | Update | - |
| article html file updated | 22 January 2013 00:19 CET | Update | - |
| article html file updated | 18 January 2013 06:33 CET | Original file | - |
