| article html file updated | 9 February 2020 12:15 CET | Update | https://www.mdpi.com/2075-4701/8/4/231 |
| article html file updated | 2 October 2019 05:20 CEST | Update | - |
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| article html file updated | 2 April 2018 23:51 CEST | Original file | - |
| article xml uploaded. | 2 April 2018 14:01 CEST | Update | https://www.mdpi.com/2075-4701/8/4/231/xml |
| article pdf uploaded. | 2 April 2018 14:01 CEST | Version of Record | https://www.mdpi.com/2075-4701/8/4/231/pdf |