| article html file updated | 8 February 2020 23:21 CET | Update | https://www.mdpi.com/1996-1073/10/12/2073 |
| article html file updated | 29 September 2019 01:02 CEST | Update | - |
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| article html file updated | 6 December 2017 14:39 CET | Original file | - |
| article xml uploaded. | 6 December 2017 14:38 CET | Update | https://www.mdpi.com/1996-1073/10/12/2073/xml |
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| article pdf uploaded. | 6 December 2017 14:38 CET | Version of Record | https://www.mdpi.com/1996-1073/10/12/2073/pdf |