| article html file updated | 5 February 2020 15:08 CET | Update | https://www.mdpi.com/1999-4915/2/8/1571 |
| article html file updated | 9 May 2019 05:06 CEST | Update | N/A |
| article html file updated | 20 March 2019 02:05 CET | Update | N/A |
| article html file updated | 16 June 2015 11:02 CEST | Update | N/A |
| article html file updated | 14 August 2014 12:06 CEST | Update | N/A |
| article xml file uploaded | 14 August 2014 12:06 CEST | Original file | https://www.mdpi.com/1999-4915/2/8/1571/xml |
| article html file updated | 6 February 2013 18:16 CET | Update | N/A |
| article html file updated | 5 February 2013 22:16 CET | Update | N/A |
| article html file updated | 28 January 2013 19:48 CET | Update | N/A |
| article html file updated | 25 January 2013 23:02 CET | Update | N/A |
| article html file updated | 22 January 2013 02:33 CET | Update | N/A |
| article html file updated | 18 January 2013 08:34 CET | Original file | N/A |
