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| article html file updated | 25 December 2018 11:24 CET | Original file | - |
| article pdf uploaded. | 25 December 2018 11:23 CET | Updated version of record | https://www.mdpi.com/2079-6412/9/1/4/pdf |
| article xml uploaded. | 25 December 2018 11:23 CET | Update | https://www.mdpi.com/2079-6412/9/1/4/xml |
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| article pdf uploaded. | 21 December 2018 14:40 CET | Updated version of record | https://www.mdpi.com/2079-6412/9/1/4/pdf-vor |
| article pdf uploaded. | 21 December 2018 14:39 CET | Version of Record | https://www.mdpi.com/2079-6412/9/1/4/pdf-vor |
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