| article html file updated | 9 February 2020 12:20 CET | Update | https://www.mdpi.com/1660-4601/15/4/664 |
| article html file updated | 2 October 2019 05:46 CEST | Update | - |
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| article html file updated | 1 May 2018 04:52 CEST | Update | - |
| article html file updated | 3 April 2018 13:53 CEST | Original file | - |
| article xml uploaded. | 3 April 2018 08:58 CEST | Original file | https://www.mdpi.com/1660-4601/15/4/664/xml |
| article pdf uploaded. | 3 April 2018 08:58 CEST | Version of Record | https://www.mdpi.com/1660-4601/15/4/664/pdf |
