| article html file updated | 10 February 2020 19:07 CET | Update | https://www.mdpi.com/2227-7072/6/4/90 |
| article html file updated | 9 October 2019 21:18 CEST | Update | - |
| article html file updated | 28 April 2019 13:25 CEST | Update | - |
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| article html file updated | 26 December 2018 11:39 CET | Update | - |
| article html file updated | 1 November 2018 11:14 CET | Original file | - |
| article pdf uploaded. | 1 November 2018 11:13 CET | Version of Record | https://www.mdpi.com/2227-7072/6/4/90/pdf |
| article xml uploaded. | 1 November 2018 11:13 CET | Update | https://www.mdpi.com/2227-7072/6/4/90/xml |
| article xml file uploaded | 1 November 2018 11:13 CET | Original file | - |
