| article html file updated | 7 February 2020 18:47 CET | Update | https://www.mdpi.com/1996-1944/9/12/969 |
| article html file updated | 22 September 2019 07:40 CEST | Update | - |
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| article html file updated | 29 November 2016 13:12 CET | Original file | - |
| article xml uploaded. | 29 November 2016 13:10 CET | Update | https://www.mdpi.com/1996-1944/9/12/969/xml |
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| article pdf uploaded. | 29 November 2016 13:10 CET | Version of Record | https://www.mdpi.com/1996-1944/9/12/969/pdf |
