| article html file updated | 5 February 2020 23:26 CET | Update | https://www.mdpi.com/2079-7737/1/3/880 |
| article html file updated | 8 May 2019 11:04 CEST | Update | - |
| article html file updated | 20 March 2019 15:58 CET | Update | - |
| article html file updated | 17 June 2015 04:49 CEST | Update | - |
| article html file updated | 28 April 2014 10:25 CEST | Update | - |
| article xml file uploaded | 28 April 2014 10:25 CEST | Update | https://www.mdpi.com/2079-7737/1/3/880/xml |
| article html file updated | 7 February 2013 17:25 CET | Update | - |
| article html file updated | 24 January 2013 11:04 CET | Update | - |
| article html file updated | 16 January 2013 08:47 CET | Original file | - |
| article xml uploaded. | 16 January 2013 08:47 CET | Original file | - |
