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| article xml uploaded. | 24 July 2017 03:06 CEST | Original file | https://www.mdpi.com/2227-9032/5/3/34/xml |
| article pdf uploaded. | 24 July 2017 03:06 CEST | Updated version of record | https://www.mdpi.com/2227-9032/5/3/34/pdf |
| article pdf uploaded. | 21 July 2017 11:35 CEST | Version of Record | https://www.mdpi.com/2227-9032/5/3/34/pdf-vor |
