| article html file updated | 9 February 2020 03:49 CET | Update | https://www.mdpi.com/2079-9276/7/1/7 |
| article html file updated | 2 May 2019 00:41 CEST | Update | N/A |
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| article xml uploaded. | 21 January 2018 07:15 CET | Original file | https://www.mdpi.com/2079-9276/7/1/7/xml |
| article pdf uploaded. | 21 January 2018 07:15 CET | Version of Record | https://www.mdpi.com/2079-9276/7/1/7/pdf |
