| article html file updated | 9 February 2020 12:56 CET | Update | https://www.mdpi.com/2075-4701/8/4/250 |
| article html file updated | 2 October 2019 09:28 CEST | Update | - |
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| article html file updated | 8 April 2018 11:00 CEST | Original file | - |
| article xml uploaded. | 8 April 2018 10:59 CEST | Update | https://www.mdpi.com/2075-4701/8/4/250/xml |
| article pdf uploaded. | 8 April 2018 10:59 CEST | Version of Record | https://www.mdpi.com/2075-4701/8/4/250/pdf |