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| article xml file uploaded | 7 July 2015 04:43 CEST | Original file | https://www.mdpi.com/1999-4923/7/2/74/xml |
| article supplementary file uploaded. | 23 June 2015 10:08 CEST | - | https://www.mdpi.com/1999-4923/7/2/74#supplementary |
| article supplementary file uploaded. | 19 June 2015 14:12 CEST | - | https://www.mdpi.com/1999-4923/7/2/74#supplementary |
| article pdf uploaded. | 19 June 2015 14:12 CEST | Version of Record | https://www.mdpi.com/1999-4923/7/2/74/pdf |