| article html file updated | 7 February 2020 06:28 CET | Update | https://new.mdpi.com/1424-8220/16/4/446 |
| article html file updated | 5 May 2019 20:19 CEST | Update | - |
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| article html file updated | 29 April 2016 04:19 CEST | Update | - |
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| article xml uploaded. | 26 March 2016 12:30 CET | Update | https://new.mdpi.com/1424-8220/16/4/446/xml |
| article pdf uploaded. | 26 March 2016 12:30 CET | Version of Record | https://new.mdpi.com/1424-8220/16/4/446/pdf |
