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| article html file updated | 15 October 2018 07:39 CEST | Original file | - |
| article pdf uploaded. | 15 October 2018 07:38 CEST | Updated version of record | https://www.mdpi.com/2414-4088/2/4/69/pdf |
| article xml uploaded. | 15 October 2018 07:38 CEST | Update | https://www.mdpi.com/2414-4088/2/4/69/xml |
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| article pdf uploaded. | 6 October 2018 11:41 CEST | Version of Record | https://www.mdpi.com/2414-4088/2/4/69/pdf-vor |
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