| article html file updated | 7 February 2020 10:05 CET | Update | https://www.mdpi.com/1424-8220/16/6/868 |
| article html file updated | 5 May 2019 13:06 CEST | Update | - |
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| article html file updated | 29 June 2016 10:44 CEST | Update | - |
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| article xml uploaded. | 13 June 2016 13:54 CEST | Original file | https://www.mdpi.com/1424-8220/16/6/868/xml |
| article pdf uploaded. | 13 June 2016 13:54 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/6/868/pdf |
