| article html file updated | 9 February 2020 06:05 CET | Update | https://www.mdpi.com/2071-1050/10/2/457 |
| article html file updated | 30 September 2019 16:07 CEST | Update | - |
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| article html file updated | 25 February 2018 03:21 CET | Original file | - |
| article xml uploaded. | 25 February 2018 03:20 CET | Update | https://www.mdpi.com/2071-1050/10/2/457/xml |
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| article pdf uploaded. | 9 February 2018 15:14 CET | Version of Record | https://www.mdpi.com/2071-1050/10/2/457/pdf |