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| article xml file uploaded | 26 June 2015 11:36 CEST | Original file | https://www.mdpi.com/2073-4441/7/5/1969/xml |
| article pdf uploaded. | 5 May 2015 10:52 CEST | Updated version of record | https://www.mdpi.com/2073-4441/7/5/1969/pdf |
| article pdf uploaded. | 30 April 2015 13:30 CEST | Version of Record | https://www.mdpi.com/2073-4441/7/5/1969/pdf-vor |
