| article html file updated | 9 February 2020 13:04 CET | Update | https://www.mdpi.com/1996-1073/11/4/872 |
| article html file updated | 2 October 2019 10:14 CEST | Update | - |
| article html file updated | 1 May 2019 04:59 CEST | Update | - |
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| article html file updated | 1 May 2018 09:14 CEST | Update | - |
| article html file updated | 9 April 2018 12:34 CEST | Original file | - |
| article xml uploaded. | 9 April 2018 12:32 CEST | Update | https://www.mdpi.com/1996-1073/11/4/872/xml |
| article pdf uploaded. | 9 April 2018 12:32 CEST | Version of Record | https://www.mdpi.com/1996-1073/11/4/872/pdf |
