| article html file updated | 6 February 2020 11:16 CET | Update | https://www.mdpi.com/1424-2818/6/3/551 |
| article html file updated | 7 May 2019 10:20 CEST | Update | - |
| article html file updated | 21 March 2019 22:32 CET | Update | - |
| article html file updated | 20 August 2015 14:38 CEST | Update | - |
| article html file updated | 26 September 2014 09:54 CEST | Original file | - |
| article xml file uploaded | 26 September 2014 09:54 CEST | Original file | https://www.mdpi.com/1424-2818/6/3/551/xml |
| article pdf uploaded. | 8 August 2014 11:33 CEST | Updated version of record | https://www.mdpi.com/1424-2818/6/3/551/pdf |
| article pdf uploaded. | 7 August 2014 08:52 CEST | Version of Record | https://www.mdpi.com/1424-2818/6/3/551/pdf-vor |
