| article html file updated | 9 February 2020 05:54 CET | Update | https://www.mdpi.com/1996-1944/11/2/259 |
| article html file updated | 30 September 2019 15:01 CEST | Update | - |
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| article html file updated | 8 February 2018 05:36 CET | Original file | - |
| article xml uploaded. | 8 February 2018 05:35 CET | Update | https://www.mdpi.com/1996-1944/11/2/259/xml |
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| article pdf uploaded. | 8 February 2018 05:35 CET | Version of Record | https://www.mdpi.com/1996-1944/11/2/259/pdf |
