| article html file updated | 9 February 2020 15:55 CET | Update | https://www.mdpi.com/2313-0105/4/2/21 |
| article html file updated | 3 October 2019 03:24 CEST | Update | - |
| article html file updated | 30 April 2019 23:23 CEST | Update | - |
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| article html file updated | 25 June 2018 11:50 CEST | Update | - |
| article html file updated | 1 May 2018 14:57 CEST | Original file | - |
| article pdf uploaded. | 1 May 2018 09:29 CEST | Version of Record | https://www.mdpi.com/2313-0105/4/2/21/pdf |
| article xml uploaded. | 1 May 2018 09:29 CEST | Update | https://www.mdpi.com/2313-0105/4/2/21/xml |
| article xml file uploaded | 1 May 2018 09:29 CEST | Original file | - |
