| article html file updated | 9 February 2020 05:25 CET | Update | https://www.mdpi.com/1660-4601/15/2/257 |
| article html file updated | 30 September 2019 12:04 CEST | Update | - |
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| article html file updated | 3 February 2018 10:03 CET | Original file | - |
| article xml uploaded. | 3 February 2018 10:02 CET | Original file | https://www.mdpi.com/1660-4601/15/2/257/xml |
| article pdf uploaded. | 3 February 2018 10:02 CET | Version of Record | https://www.mdpi.com/1660-4601/15/2/257/pdf |