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| article html file updated | 17 July 2022 09:02 CEST | Update | N/A |
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| article html file updated | 16 November 2018 10:10 CET | Original file | N/A |
| article pdf uploaded. | 16 November 2018 10:09 CET | Updated version of record | https://www.mdpi.com/2079-9268/8/4/44/pdf |
| article xml uploaded. | 16 November 2018 10:09 CET | Update | https://www.mdpi.com/2079-9268/8/4/44/xml |
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| article pdf uploaded. | 13 November 2018 17:17 CET | Updated version of record | https://www.mdpi.com/2079-9268/8/4/44/pdf-vor |
| article pdf uploaded. | 13 November 2018 17:15 CET | Version of Record | https://www.mdpi.com/2079-9268/8/4/44/pdf-vor |
| article xml file uploaded | 13 November 2018 17:15 CET | Original file | N/A |
