| article html file updated | 6 February 2020 09:36 CET | Update | https://www.mdpi.com/1424-8247/7/6/676 |
| article html file updated | 7 May 2019 13:51 CEST | Update | - |
| article html file updated | 21 March 2019 17:53 CET | Update | - |
| article html file updated | 20 August 2015 08:37 CEST | Update | - |
| article html file updated | 2 July 2014 12:32 CEST | Original file | - |
| article xml file uploaded | 2 July 2014 12:32 CEST | Original file | https://www.mdpi.com/1424-8247/7/6/676/xml |
| article supplementary file uploaded. | 28 May 2014 16:50 CEST | - | https://www.mdpi.com/1424-8247/7/6/676#supplementary |
| article pdf uploaded. | 28 May 2014 16:33 CEST | Version of Record | https://www.mdpi.com/1424-8247/7/6/676/pdf |
