| article html file updated | 7 February 2020 15:16 CET | Update | https://new.mdpi.com/1424-8220/16/9/1539 |
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| article pdf uploaded. | 23 September 2016 09:38 CEST | Updated version of record | https://new.mdpi.com/1424-8220/16/9/1539/pdf |
| article xml uploaded. | 23 September 2016 09:38 CEST | Update | - |
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| article html file updated | 21 September 2016 07:02 CEST | Original file | - |
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| article pdf uploaded. | 21 September 2016 07:00 CEST | Version of Record | https://new.mdpi.com/1424-8220/16/9/1539/pdf-vor |
