| article html file updated | 9 February 2020 01:39 CET | Update | https://www.mdpi.com/2073-4433/9/1/7 |
| article html file updated | 29 September 2019 14:18 CEST | Update | - |
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| article html file updated | 1 January 2018 04:39 CET | Original file | - |
| article xml uploaded. | 1 January 2018 04:37 CET | Update | https://www.mdpi.com/2073-4433/9/1/7/xml |
| article pdf uploaded. | 1 January 2018 04:37 CET | Version of Record | https://www.mdpi.com/2073-4433/9/1/7/pdf |
