| article html file updated | 9 February 2020 14:01 CET | Update | https://www.mdpi.com/2075-4442/6/2/36 |
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| article xml uploaded. | 16 April 2018 16:49 CEST | Update | https://www.mdpi.com/2075-4442/6/2/36/xml |
| article pdf uploaded. | 16 April 2018 16:49 CEST | Version of Record | https://www.mdpi.com/2075-4442/6/2/36/pdf |