| article html file updated | 5 February 2020 15:06 CET | Update | https://www.mdpi.com/2073-4425/1/2/227 |
| article html file updated | 20 March 2019 02:00 CET | Update | - |
| article html file updated | 16 June 2015 11:00 CEST | Update | - |
| article html file updated | 14 August 2014 11:41 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:41 CEST | Update | https://www.mdpi.com/2073-4425/1/2/227/xml |
| article html file updated | 14 August 2014 11:21 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:21 CEST | Update | - |
| article html file updated | 18 March 2014 09:30 CET | Original file | - |
| article xml file uploaded | 18 March 2014 09:30 CET | Original file | - |
