| article html file updated | 9 February 2020 03:19 CET | Update | https://www.mdpi.com/1999-4893/11/1/9 |
| article html file updated | 29 September 2019 23:32 CEST | Update | N/A |
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| article html file updated | 16 January 2018 17:33 CET | Original file | N/A |
| article xml uploaded. | 16 January 2018 17:32 CET | Update | https://www.mdpi.com/1999-4893/11/1/9/xml |
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| article pdf uploaded. | 16 January 2018 17:32 CET | Version of Record | https://www.mdpi.com/1999-4893/11/1/9/pdf |