| article html file updated | 9 February 2020 06:27 CET | Update | https://www.mdpi.com/2079-4991/8/2/104 |
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| article xml uploaded. | 12 February 2018 16:15 CET | Update | https://www.mdpi.com/2079-4991/8/2/104/xml |
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| article pdf uploaded. | 12 February 2018 16:15 CET | Version of Record | https://www.mdpi.com/2079-4991/8/2/104/pdf |