| article html file updated | 9 February 2020 13:14 CET | Update | https://www.mdpi.com/1996-1073/11/4/880 |
| article html file updated | 2 October 2019 11:14 CEST | Update | - |
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| article xml uploaded. | 10 April 2018 14:55 CEST | Original file | https://www.mdpi.com/1996-1073/11/4/880/xml |
| article pdf uploaded. | 10 April 2018 14:55 CEST | Version of Record | https://www.mdpi.com/1996-1073/11/4/880/pdf |