| article html file updated | 12 September 2018 08:18 CEST | Update | https://www.mdpi.com/1420-3049/19/6/8556 |
| article html file updated | 20 August 2015 10:41 CEST | Update | - |
| article html file updated | 1 July 2014 05:33 CEST | Original file | - |
| article xml file uploaded | 1 July 2014 05:33 CEST | Original file | https://www.mdpi.com/1420-3049/19/6/8556/xml |
| article pdf uploaded. | 23 June 2014 13:39 CEST | Version of Record | https://www.mdpi.com/1420-3049/19/6/8556/pdf |
