| article html file updated | 9 February 2020 14:03 CET | Update | https://www.mdpi.com/2071-1050/10/4/1209 |
| article html file updated | 2 October 2019 16:20 CEST | Update | - |
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| article xml uploaded. | 17 April 2018 06:06 CEST | Update | https://www.mdpi.com/2071-1050/10/4/1209/xml |
| article pdf uploaded. | 17 April 2018 06:06 CEST | Version of Record | https://www.mdpi.com/2071-1050/10/4/1209/pdf |