| article html file updated | 6 February 2020 12:40 CET | Update | https://www.mdpi.com/2072-6694/6/4/2049 |
| article html file updated | 22 March 2019 02:05 CET | Update | - |
| article html file updated | 20 August 2015 22:09 CEST | Update | - |
| article html file updated | 26 December 2014 11:26 CET | Update | - |
| article xml file uploaded | 26 December 2014 11:26 CET | Update | https://www.mdpi.com/2072-6694/6/4/2049/xml |
| article html file updated | 24 October 2014 07:43 CEST | Original file | - |
| article xml file uploaded | 24 October 2014 07:43 CEST | Original file | - |
| article pdf uploaded. | 2 October 2014 11:18 CEST | Version of Record | https://www.mdpi.com/2072-6694/6/4/2049/pdf |
