| article html file updated | 9 February 2020 00:33 CET | Update | https://www.mdpi.com/1996-1073/10/12/2170 |
| article html file updated | 29 September 2019 07:57 CEST | Update | - |
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| article html file updated | 2 January 2018 20:11 CET | Update | - |
| article html file updated | 19 December 2017 12:30 CET | Original file | - |
| article xml uploaded. | 19 December 2017 12:28 CET | Original file | https://www.mdpi.com/1996-1073/10/12/2170/xml |
| article pdf uploaded. | 19 December 2017 12:28 CET | Version of Record | https://www.mdpi.com/1996-1073/10/12/2170/pdf |
