| article html file updated | 6 February 2020 17:05 CET | Update | https://new.mdpi.com/1424-8220/15/4/7499 |
| article html file updated | 6 May 2019 22:57 CEST | Update | - |
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| article html file updated | 21 August 2015 09:32 CEST | Update | - |
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| article xml file uploaded | 12 May 2015 12:23 CEST | Original file | https://new.mdpi.com/1424-8220/15/4/7499/xml |
| article pdf uploaded. | 27 March 2015 11:54 CET | Version of Record | https://new.mdpi.com/1424-8220/15/4/7499/pdf |
