| article html file updated | 8 February 2020 09:02 CET | Update | https://new.mdpi.com/2308-3417/2/3/20 |
| article html file updated | 3 May 2019 16:01 CEST | Update | - |
| article html file updated | 23 June 2017 08:38 CEST | Original file | - |
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| article pdf uploaded. | 23 June 2017 08:37 CEST | Version of Record | https://new.mdpi.com/2308-3417/2/3/20/pdf |
