| article html file updated | 9 February 2020 00:59 CET | Update | https://www.mdpi.com/1660-4601/15/1/18 |
| article html file updated | 2 May 2019 06:35 CEST | Update | - |
| article html file updated | 18 April 2019 04:31 CEST | Update | - |
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| article html file updated | 1 February 2018 08:37 CET | Update | - |
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| article html file updated | 23 December 2017 08:17 CET | Original file | - |
| article xml uploaded. | 23 December 2017 08:16 CET | Original file | https://www.mdpi.com/1660-4601/15/1/18/xml |
| article pdf uploaded. | 23 December 2017 08:16 CET | Version of Record | https://www.mdpi.com/1660-4601/15/1/18/pdf |
