| article html file updated | 8 February 2020 23:36 CET | Update | https://www.mdpi.com/2073-8994/9/12/309 |
| article html file updated | 29 September 2019 02:24 CEST | Update | - |
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| article html file updated | 9 December 2017 08:03 CET | Original file | - |
| article xml uploaded. | 9 December 2017 08:01 CET | Original file | https://www.mdpi.com/2073-8994/9/12/309/xml |
| article pdf uploaded. | 9 December 2017 08:01 CET | Version of Record | https://www.mdpi.com/2073-8994/9/12/309/pdf |
