| article html file updated | 9 February 2020 07:21 CET | Update | https://www.mdpi.com/2313-0105/4/1/12 |
| article html file updated | 30 September 2019 23:29 CEST | Update | - |
| article html file updated | 1 May 2019 16:55 CEST | Update | - |
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| article html file updated | 27 March 2018 15:41 CEST | Update | - |
| article html file updated | 23 February 2018 10:39 CET | Original file | - |
| article xml uploaded. | 23 February 2018 10:38 CET | Update | https://www.mdpi.com/2313-0105/4/1/12/xml |
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| article pdf uploaded. | 23 February 2018 10:38 CET | Version of Record | https://www.mdpi.com/2313-0105/4/1/12/pdf |
