| article html file updated | 9 February 2020 11:04 CET | Update | https://www.mdpi.com/1424-8220/18/4/961 |
| article html file updated | 1 October 2019 22:18 CEST | Update | - |
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| article html file updated | 7 May 2018 03:59 CEST | Update | - |
| article html file updated | 26 March 2018 03:14 CEST | Original file | - |
| article xml uploaded. | 26 March 2018 03:13 CEST | Update | https://www.mdpi.com/1424-8220/18/4/961/xml |
| article pdf uploaded. | 26 March 2018 03:13 CEST | Updated version of record | https://www.mdpi.com/1424-8220/18/4/961/pdf |
| article pdf uploaded. | 23 March 2018 17:58 CET | Version of Record | https://www.mdpi.com/1424-8220/18/4/961/pdf-vor |