| article html file updated | 9 February 2020 01:46 CET | Update | https://www.mdpi.com/1660-3397/16/1/9 |
| article html file updated | 29 September 2019 14:57 CEST | Update | - |
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| article pdf uploaded. | 23 January 2018 07:14 CET | Updated version of record | https://www.mdpi.com/1660-3397/16/1/9/pdf |
| article html file updated | 2 January 2018 20:49 CET | Original file | - |
| article xml uploaded. | 2 January 2018 12:05 CET | Original file | https://www.mdpi.com/1660-3397/16/1/9/xml |
