| article html file updated | 7 February 2020 20:10 CET | Update | https://www.mdpi.com/1424-8220/17/1/8 |
| article html file updated | 22 September 2019 14:29 CEST | Update | - |
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| article html file updated | 8 February 2017 08:36 CET | Update | - |
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| article xml uploaded. | 23 December 2016 07:40 CET | Original file | https://www.mdpi.com/1424-8220/17/1/8/xml |
| article pdf uploaded. | 23 December 2016 07:40 CET | Version of Record | https://www.mdpi.com/1424-8220/17/1/8/pdf |
