| article html file updated | 8 February 2020 05:00 CET | Update | https://new.mdpi.com/2227-9717/5/2/24 |
| article html file updated | 24 September 2019 15:28 CEST | Update | - |
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| article pdf uploaded. | 4 May 2017 08:58 CEST | Version of Record | https://new.mdpi.com/2227-9717/5/2/24/pdf |
