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| article pdf uploaded. | 14 January 2019 10:56 CET | Updated version of record | https://www.mdpi.com/1999-4923/11/1/21/pdf |
| article xml uploaded. | 14 January 2019 10:56 CET | Update | https://www.mdpi.com/1999-4923/11/1/21/xml |
| article xml file uploaded | 14 January 2019 10:56 CET | Update | N/A |
| article html file updated | 10 January 2019 02:09 CET | Original file | N/A |
| article pdf uploaded. | 9 January 2019 05:01 CET | Updated version of record | https://www.mdpi.com/1999-4923/11/1/21/pdf-vor |
| article xml file uploaded | 9 January 2019 05:01 CET | Update | N/A |
| article pdf uploaded. | 5 January 2019 12:10 CET | Version of Record | https://www.mdpi.com/1999-4923/11/1/21/pdf-vor |
| article xml file uploaded | 5 January 2019 12:10 CET | Original file | N/A |
