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| article html file updated | 27 September 2019 04:13 CEST | Update | - |
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| article xml uploaded. | 20 September 2017 09:39 CEST | Update | https://www.mdpi.com/2218-0532/85/3/31/xml |
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| article html file updated | 18 September 2017 03:18 CEST | Original file | - |
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| article pdf uploaded. | 18 September 2017 03:16 CEST | Updated version of record | https://www.mdpi.com/2218-0532/85/3/31/pdf-vor |
| article pdf uploaded. | 15 September 2017 12:29 CEST | Version of Record | https://www.mdpi.com/2218-0532/85/3/31/pdf-vor |