| article html file updated | 9 February 2020 11:25 CET | Update | https://www.mdpi.com/2409-9279/1/2/12 |
| article html file updated | 2 October 2019 00:19 CEST | Update | - |
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| article html file updated | 27 March 2018 10:27 CEST | Original file | - |
| article xml uploaded. | 27 March 2018 10:26 CEST | Update | https://www.mdpi.com/2409-9279/1/2/12/xml |
| article pdf uploaded. | 27 March 2018 10:26 CEST | Version of Record | https://www.mdpi.com/2409-9279/1/2/12/pdf |
