| article html file updated | 7 February 2020 20:23 CET | Update | https://www.mdpi.com/2072-4292/9/1/13 |
| article html file updated | 22 September 2019 15:43 CEST | Update | N/A |
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| article pdf uploaded. | 27 December 2016 12:07 CET | Version of Record | https://www.mdpi.com/2072-4292/9/1/13/pdf |