| article html file updated | 5 February 2020 22:52 CET | Update | https://www.mdpi.com/2075-1729/2/4/323 |
| article html file updated | 8 May 2019 12:32 CEST | Update | - |
| article html file updated | 20 March 2019 14:42 CET | Update | - |
| article html file updated | 17 June 2015 03:49 CEST | Update | - |
| article html file updated | 24 July 2014 10:31 CEST | Update | - |
| article xml file uploaded | 24 July 2014 10:31 CEST | Update | https://www.mdpi.com/2075-1729/2/4/323/xml |
| article html file updated | 24 July 2014 10:23 CEST | Original file | - |
| article xml file uploaded | 24 July 2014 10:23 CEST | Original file | - |
