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| article html file updated | 22 November 2018 10:32 CET | Original file | N/A |
| article pdf uploaded. | 22 November 2018 10:31 CET | Updated version of record | https://www.mdpi.com/2077-1312/6/4/137/pdf |
| article xml uploaded. | 22 November 2018 10:31 CET | Update | https://www.mdpi.com/2077-1312/6/4/137/xml |
| article xml file uploaded | 22 November 2018 10:31 CET | Update | N/A |
| article pdf uploaded. | 12 November 2018 12:46 CET | Version of Record | https://www.mdpi.com/2077-1312/6/4/137/pdf-vor |
| article xml file uploaded | 12 November 2018 12:46 CET | Original file | N/A |
