| article html file updated | 29 August 2025 20:30 CEST | Update | https://www.mdpi.com/2218-1989/2/4/913 |
| article html file updated | 15 July 2022 22:02 CEST | Update | - |
| article html file updated | 5 February 2020 22:54 CET | Update | - |
| article html file updated | 8 May 2019 12:27 CEST | Update | - |
| article html file updated | 20 March 2019 14:46 CET | Update | - |
| article html file updated | 17 June 2015 03:52 CEST | Update | - |
| article html file updated | 7 January 2014 12:27 CET | Update | - |
| article xml file uploaded | 7 January 2014 12:27 CET | Update | https://www.mdpi.com/2218-1989/2/4/913/xml |
| article html file updated | 30 August 2013 09:15 CEST | Update | - |
| article xml file uploaded | 30 August 2013 09:15 CEST | Original file | - |
| article html file updated | 7 February 2013 16:38 CET | Update | - |
| article html file updated | 24 January 2013 08:02 CET | Original file | - |