| article html file updated | 9 February 2020 03:29 CET | Update | https://www.mdpi.com/2075-4701/8/1/63 |
| article html file updated | 30 September 2019 00:36 CEST | Update | N/A |
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| article xml uploaded. | 18 January 2018 09:37 CET | Update | https://www.mdpi.com/2075-4701/8/1/63/xml |
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| article pdf uploaded. | 18 January 2018 09:37 CET | Version of Record | https://www.mdpi.com/2075-4701/8/1/63/pdf |