| article html file updated | 8 February 2020 23:15 CET | Update | https://www.mdpi.com/2071-1050/9/12/2248 |
| article html file updated | 29 September 2019 00:25 CEST | Update | N/A |
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| article xml uploaded. | 5 December 2017 16:48 CET | Original file | https://www.mdpi.com/2071-1050/9/12/2248/xml |
| article pdf uploaded. | 5 December 2017 16:48 CET | Version of Record | https://www.mdpi.com/2071-1050/9/12/2248/pdf |