| article html file updated | 9 February 2020 08:43 CET | Update | https://www.mdpi.com/2571-8789/2/1/15 |
| article html file updated | 1 October 2019 07:23 CEST | Update | N/A |
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| article html file updated | 6 March 2018 05:07 CET | Original file | N/A |
| article xml uploaded. | 6 March 2018 05:06 CET | Original file | https://www.mdpi.com/2571-8789/2/1/15/xml |
| article pdf uploaded. | 6 March 2018 05:06 CET | Version of Record | https://www.mdpi.com/2571-8789/2/1/15/pdf |
