| article html file updated | 9 February 2020 17:20 CET | Update | https://www.mdpi.com/2225-1154/6/2/40 |
| article html file updated | 3 October 2019 12:32 CEST | Update | - |
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| article xml uploaded. | 12 May 2018 05:45 CEST | Update | https://www.mdpi.com/2225-1154/6/2/40/xml |
| article pdf uploaded. | 12 May 2018 05:45 CEST | Updated version of record | https://www.mdpi.com/2225-1154/6/2/40/pdf |
| article html file updated | 12 May 2018 05:42 CEST | Original file | - |
| article pdf uploaded. | 12 May 2018 05:41 CEST | Version of Record | https://www.mdpi.com/2225-1154/6/2/40/pdf-vor |
| article xml file uploaded | 12 May 2018 05:41 CEST | Original file | - |