| article html file updated | 9 February 2020 12:02 CET | Update | https://www.mdpi.com/1996-1944/11/4/539 |
| article html file updated | 2 October 2019 04:05 CEST | Update | - |
| article html file updated | 1 May 2019 07:04 CEST | Update | - |
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| article html file updated | 31 March 2018 09:12 CEST | Original file | - |
| article xml uploaded. | 31 March 2018 09:10 CEST | Update | https://www.mdpi.com/1996-1944/11/4/539/xml |
| article pdf uploaded. | 31 March 2018 09:10 CEST | Version of Record | https://www.mdpi.com/1996-1944/11/4/539/pdf |
