| article html file updated | 6 February 2020 14:34 CET | Update | https://www.mdpi.com/2072-6651/6/12/3454 |
| article html file updated | 7 May 2019 03:44 CEST | Update | - |
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| article pdf uploaded. | 18 December 2014 13:36 CET | Version of Record | https://www.mdpi.com/2072-6651/6/12/3454/pdf |