| article html file updated | 9 February 2020 05:04 CET | Update | https://www.mdpi.com/2075-5309/8/2/22 |
| article html file updated | 30 September 2019 09:48 CEST | Update | - |
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| article html file updated | 31 January 2018 17:32 CET | Original file | - |
| article xml uploaded. | 31 January 2018 17:31 CET | Update | https://www.mdpi.com/2075-5309/8/2/22/xml |
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| article pdf uploaded. | 31 January 2018 17:31 CET | Version of Record | https://www.mdpi.com/2075-5309/8/2/22/pdf |