| article html file updated | 8 February 2020 20:08 CET | Update | https://www.mdpi.com/2073-8994/9/11/257 |
| article html file updated | 28 September 2019 04:25 CEST | Update | - |
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| article html file updated | 30 November 2017 08:23 CET | Update | - |
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| article xml uploaded. | 2 November 2017 09:10 CET | Original file | https://www.mdpi.com/2073-8994/9/11/257/xml |
| article pdf uploaded. | 2 November 2017 09:10 CET | Version of Record | https://www.mdpi.com/2073-8994/9/11/257/pdf |
