| article html file updated | 9 February 2020 04:50 CET | Update | https://www.mdpi.com/2076-3921/7/2/25 |
| article html file updated | 30 September 2019 08:25 CEST | Update | - |
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| article html file updated | 30 January 2018 10:08 CET | Original file | - |
| article xml uploaded. | 30 January 2018 10:07 CET | Update | https://www.mdpi.com/2076-3921/7/2/25/xml |
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| article pdf uploaded. | 30 January 2018 10:07 CET | Version of Record | https://www.mdpi.com/2076-3921/7/2/25/pdf |