| article html file updated | 9 February 2020 11:16 CET | Update | https://www.mdpi.com/2075-1702/6/2/12 |
| article html file updated | 1 October 2019 23:29 CEST | Update | - |
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| article xml uploaded. | 26 March 2018 10:14 CEST | Original file | https://www.mdpi.com/2075-1702/6/2/12/xml |
| article pdf uploaded. | 26 March 2018 10:14 CEST | Version of Record | https://www.mdpi.com/2075-1702/6/2/12/pdf |