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| article pdf uploaded. | 23 November 2018 12:59 CET | Updated version of record | https://www.mdpi.com/2227-7072/6/4/94/pdf |
| article xml uploaded. | 23 November 2018 12:59 CET | Update | https://www.mdpi.com/2227-7072/6/4/94/xml |
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| article pdf uploaded. | 20 November 2018 16:57 CET | Updated version of record | https://www.mdpi.com/2227-7072/6/4/94/pdf-vor |
| article pdf uploaded. | 20 November 2018 16:27 CET | Version of Record | https://www.mdpi.com/2227-7072/6/4/94/pdf-vor |
| article xml file uploaded | 20 November 2018 16:27 CET | Original file | - |
