| article html file updated | 7 February 2020 21:19 CET | Update | https://www.mdpi.com/2073-8994/9/1/11 |
| article html file updated | 22 September 2019 20:34 CEST | Update | - |
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| article html file updated | 7 February 2017 04:23 CET | Update | - |
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| article xml uploaded. | 12 January 2017 14:30 CET | Original file | https://www.mdpi.com/2073-8994/9/1/11/xml |
| article pdf uploaded. | 12 January 2017 14:30 CET | Version of Record | https://www.mdpi.com/2073-8994/9/1/11/pdf |
