| article html file updated | 6 February 2020 06:57 CET | Update | https://www.mdpi.com/1660-3397/12/2/568 |
| article html file updated | 7 May 2019 19:19 CEST | Update | - |
| article html file updated | 21 March 2019 11:36 CET | Update | - |
| article html file updated | 19 August 2015 18:46 CEST | Update | - |
| article html file updated | 18 March 2014 09:46 CET | Original file | - |
| article xml file uploaded | 18 March 2014 09:45 CET | Original file | https://www.mdpi.com/1660-3397/12/2/568/xml |
| article pdf uploaded. | 27 January 2014 12:30 CET | Version of Record | https://www.mdpi.com/1660-3397/12/2/568/pdf |
