| article html file updated | 9 February 2020 04:59 CET | Update | https://www.mdpi.com/1996-1944/11/2/220 |
| article html file updated | 30 September 2019 09:17 CEST | Update | - |
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| article html file updated | 31 January 2018 10:11 CET | Original file | - |
| article xml uploaded. | 31 January 2018 10:10 CET | Update | https://www.mdpi.com/1996-1944/11/2/220/xml |
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| article pdf uploaded. | 31 January 2018 10:10 CET | Version of Record | https://www.mdpi.com/1996-1944/11/2/220/pdf |
