| article html file updated | 7 February 2020 21:10 CET | Update | https://www.mdpi.com/1660-3397/15/1/16 |
| article html file updated | 22 September 2019 19:53 CEST | Update | - |
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| article html file updated | 7 February 2017 13:37 CET | Update | - |
| article html file updated | 11 January 2017 03:30 CET | Original file | - |
| article xml uploaded. | 11 January 2017 03:29 CET | Original file | https://www.mdpi.com/1660-3397/15/1/16/xml |
| article pdf uploaded. | 11 January 2017 03:29 CET | Version of Record | https://www.mdpi.com/1660-3397/15/1/16/pdf |
