| article html file updated | 21 August 2015 04:56 CEST | Update | https://www.mdpi.com/1424-8220/15/1/440 |
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| article pdf uploaded. | 5 January 2015 08:34 CET | Updated version of record | https://www.mdpi.com/1424-8220/15/1/440/pdf |
| article pdf uploaded. | 30 December 2014 08:15 CET | Updated version of record | https://www.mdpi.com/1424-8220/15/1/440/pdf-vor |
| article pdf uploaded. | 29 December 2014 12:07 CET | Version of Record | https://www.mdpi.com/1424-8220/15/1/440/pdf-vor |
