| article html file updated | 6 February 2020 00:00 CET | Update | https://www.mdpi.com/1999-4915/5/1/192 |
| article html file updated | 8 May 2019 09:48 CEST | Update | - |
| article html file updated | 20 March 2019 17:13 CET | Update | - |
| article html file updated | 17 June 2015 05:32 CEST | Update | - |
| article html file updated | 8 February 2013 09:31 CET | Update | - |
| article html file updated | 7 February 2013 17:51 CET | Update | - |
| article html file updated | 5 February 2013 12:58 CET | Update | - |
| article xml file uploaded | 5 February 2013 12:58 CET | Update | https://www.mdpi.com/1999-4915/5/1/192/xml |
| article html file updated | 25 January 2013 17:11 CET | Update | - |
| article xml uploaded. | 25 January 2013 17:11 CET | Update | - |
| article html file updated | 24 January 2013 12:21 CET | Update | - |
| article pdf uploaded. | 24 January 2013 09:38 CET | Version of Record | https://www.mdpi.com/1999-4915/5/1/192/pdf |
| article html file updated | 22 January 2013 15:43 CET | Update | - |
| article xml uploaded. | 22 January 2013 15:43 CET | Update | - |
| article html file updated | 21 January 2013 11:12 CET | Original file | - |
| article xml uploaded. | 21 January 2013 11:12 CET | Original file | - |
