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| article xml file uploaded | 27 January 2015 07:01 CET | Original file | https://www.mdpi.com/1660-4601/12/1/521/xml |
| article pdf uploaded. | 12 January 2015 08:53 CET | Updated version of record | https://www.mdpi.com/1660-4601/12/1/521/pdf |
| article pdf uploaded. | 9 January 2015 11:01 CET | Version of Record | https://www.mdpi.com/1660-4601/12/1/521/pdf-vor |
