| article html file updated | 5 February 2020 21:57 CET | Update | https://www.mdpi.com/2075-1680/1/2/201 |
| article html file updated | 8 May 2019 14:49 CEST | Update | - |
| article html file updated | 20 March 2019 12:29 CET | Update | - |
| article html file updated | 17 June 2015 02:16 CEST | Update | - |
| article html file updated | 14 August 2014 11:40 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:40 CEST | Update | https://www.mdpi.com/2075-1680/1/2/201/xml |
| article html file updated | 14 August 2014 11:20 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:20 CEST | Original file | - |
| article html file updated | 7 February 2013 14:58 CET | Update | - |
| article html file updated | 7 February 2013 06:05 CET | Update | - |
| article html file updated | 6 February 2013 10:19 CET | Update | - |
| article html file updated | 29 January 2013 06:34 CET | Update | - |
| article html file updated | 24 January 2013 01:57 CET | Original file | - |
