| article html file updated | 9 February 2020 04:03 CET | Update | https://www.mdpi.com/2079-9276/7/1/8 |
| article html file updated | 2 May 2019 00:09 CEST | Update | N/A |
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| article pdf uploaded. | 23 January 2018 17:47 CET | Version of Record | https://www.mdpi.com/2079-9276/7/1/8/pdf |