| article html file updated | 8 February 2020 23:36 CET | Update | https://www.mdpi.com/2073-8994/9/12/308 |
| article html file updated | 29 September 2019 02:22 CEST | Update | - |
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| article html file updated | 2 January 2018 17:38 CET | Update | - |
| article html file updated | 8 December 2017 17:24 CET | Original file | - |
| article xml uploaded. | 8 December 2017 17:22 CET | Original file | https://www.mdpi.com/2073-8994/9/12/308/xml |
| article pdf uploaded. | 8 December 2017 17:22 CET | Version of Record | https://www.mdpi.com/2073-8994/9/12/308/pdf |
