| article html file updated | 7 February 2020 19:42 CET | Update | https://www.mdpi.com/1996-1944/9/12/1013 |
| article html file updated | 22 September 2019 11:59 CEST | Update | - |
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| article html file updated | 28 December 2016 10:50 CET | Update | - |
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| article xml uploaded. | 15 December 2016 14:01 CET | Original file | https://www.mdpi.com/1996-1944/9/12/1013/xml |
| article pdf uploaded. | 15 December 2016 14:01 CET | Version of Record | https://www.mdpi.com/1996-1944/9/12/1013/pdf |
