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| article pdf uploaded. | 28 November 2018 02:32 CET | Updated version of record | https://www.mdpi.com/2076-0787/7/4/123/pdf |
| article xml uploaded. | 28 November 2018 02:32 CET | Update | https://www.mdpi.com/2076-0787/7/4/123/xml |
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| article html file updated | 25 November 2018 09:35 CET | Original file | - |
| article pdf uploaded. | 25 November 2018 09:33 CET | Version of Record | https://www.mdpi.com/2076-0787/7/4/123/pdf-vor |
| article xml uploaded. | 25 November 2018 09:33 CET | Update | - |
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