| article html file updated | 12 September 2018 06:00 CEST | Update | https://www.mdpi.com/1420-3049/19/4/3926 |
| article html file updated | 20 August 2015 01:46 CEST | Original file | - |
| article pdf uploaded. | 24 April 2014 13:25 CEST | Updated version of record | https://www.mdpi.com/1420-3049/19/4/3926/pdf |
| article pdf uploaded. | 31 March 2014 13:48 CEST | Version of Record | https://www.mdpi.com/1420-3049/19/4/3926/pdf-vor |
