| article html file updated | 5 February 2020 22:23 CET | Update | https://www.mdpi.com/2076-3425/2/4/504 |
| article html file updated | 19 September 2019 13:59 CEST | Update | - |
| article html file updated | 8 May 2019 13:50 CEST | Update | - |
| article html file updated | 20 March 2019 13:32 CET | Update | - |
| article html file updated | 17 June 2015 02:57 CEST | Update | - |
| article html file updated | 20 May 2014 08:32 CEST | Update | - |
| article xml file uploaded | 20 May 2014 08:32 CEST | Original file | https://www.mdpi.com/2076-3425/2/4/504/xml |
| article html file updated | 7 February 2013 15:46 CET | Update | - |
| article html file updated | 24 January 2013 05:06 CET | Original file | - |
