| article html file updated | 5 February 2020 22:01 CET | Update | https://www.mdpi.com/2073-4360/4/3/1613 |
| article html file updated | 8 May 2019 14:39 CEST | Update | - |
| article html file updated | 20 March 2019 12:39 CET | Update | - |
| article html file updated | 17 June 2015 02:24 CEST | Update | - |
| article html file updated | 14 August 2014 12:04 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:04 CEST | Original file | https://www.mdpi.com/2073-4360/4/3/1613/xml |
| article html file updated | 7 February 2013 15:05 CET | Update | - |
| article html file updated | 7 February 2013 06:16 CET | Update | - |
| article html file updated | 6 February 2013 10:26 CET | Update | - |
| article html file updated | 29 January 2013 06:41 CET | Update | - |
| article html file updated | 24 January 2013 02:22 CET | Original file | - |
