| article html file updated | 5 February 2020 22:59 CET | Update | https://www.mdpi.com/2076-3425/2/4/649 |
| article html file updated | 8 May 2019 12:13 CEST | Update | - |
| article html file updated | 20 March 2019 14:58 CET | Update | - |
| article html file updated | 17 June 2015 04:02 CEST | Update | - |
| article html file updated | 20 May 2014 08:33 CEST | Update | - |
| article xml file uploaded | 20 May 2014 08:33 CEST | Original file | https://www.mdpi.com/2076-3425/2/4/649/xml |
| article html file updated | 7 February 2013 16:45 CET | Update | - |
| article html file updated | 24 January 2013 08:41 CET | Original file | - |
