| article html file updated | 8 February 2020 22:25 CET | Update | https://www.mdpi.com/1999-4907/8/12/465 |
| article html file updated | 28 September 2019 19:20 CEST | Update | - |
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| article html file updated | 28 November 2017 08:26 CET | Original file | - |
| article xml uploaded. | 28 November 2017 08:25 CET | Update | https://www.mdpi.com/1999-4907/8/12/465/xml |
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| article pdf uploaded. | 28 November 2017 08:25 CET | Version of Record | https://www.mdpi.com/1999-4907/8/12/465/pdf |