| article html file updated | 7 February 2020 22:19 CET | Update | https://new.mdpi.com/2075-4701/7/2/36 |
| article html file updated | 23 September 2019 02:03 CEST | Update | - |
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| article pdf uploaded. | 27 January 2017 17:01 CET | Version of Record | https://new.mdpi.com/2075-4701/7/2/36/pdf |
