| article html file updated | 9 February 2020 04:11 CET | Update | https://new.mdpi.com/2410-3888/3/1/6 |
| article html file updated | 30 September 2019 04:27 CEST | Update | - |
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| article html file updated | 24 January 2018 10:11 CET | Original file | - |
| article xml uploaded. | 24 January 2018 10:09 CET | Original file | https://new.mdpi.com/2410-3888/3/1/6/xml |
| article pdf uploaded. | 24 January 2018 10:09 CET | Version of Record | https://new.mdpi.com/2410-3888/3/1/6/pdf |
