| article html file updated | 8 February 2020 06:25 CET | Update | https://www.mdpi.com/2071-1050/9/5/868 |
| article html file updated | 24 September 2019 22:51 CEST | Update | - |
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| article html file updated | 21 May 2017 12:45 CEST | Original file | - |
| article xml uploaded. | 21 May 2017 12:44 CEST | Original file | https://www.mdpi.com/2071-1050/9/5/868/xml |
| article pdf uploaded. | 21 May 2017 12:44 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/5/868/pdf |
