| article html file updated | 6 February 2020 09:09 CET | Update | https://www.mdpi.com/2073-4344/4/2/146 |
| article html file updated | 7 May 2019 14:44 CEST | Update | - |
| article html file updated | 21 March 2019 16:50 CET | Update | - |
| article html file updated | 20 August 2015 06:25 CEST | Update | - |
| article html file updated | 22 July 2014 08:26 CEST | Original file | - |
| article xml file uploaded | 22 July 2014 08:26 CEST | Original file | https://www.mdpi.com/2073-4344/4/2/146/xml |
| article pdf uploaded. | 9 May 2014 14:55 CEST | Version of Record | https://www.mdpi.com/2073-4344/4/2/146/pdf |
