| article html file updated | 12 September 2018 06:06 CEST | Update | https://www.mdpi.com/1420-3049/19/4/4355 |
| article html file updated | 20 August 2015 02:38 CEST | Original file | - |
| article pdf uploaded. | 25 April 2014 08:28 CEST | Updated version of record | https://www.mdpi.com/1420-3049/19/4/4355/pdf |
| article pdf uploaded. | 9 April 2014 14:51 CEST | Version of Record | https://www.mdpi.com/1420-3049/19/4/4355/pdf-vor |
