| article html file updated | 29 June 2017 13:28 CEST | Update | https://www.mdpi.com/1424-8220/13/4/5404 |
| article html file updated | 29 June 2017 13:27 CEST | Update | - |
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| article html file updated | 17 June 2015 08:38 CEST | Update | - |
| article html file updated | 5 June 2013 12:04 CEST | Original file | - |
| article xml file uploaded | 5 June 2013 12:04 CEST | Original file | https://www.mdpi.com/1424-8220/13/4/5404/xml |
| article pdf uploaded. | 22 April 2013 13:50 CEST | Version of Record | https://www.mdpi.com/1424-8220/13/4/5404/pdf |
