| article html file updated | 7 February 2020 19:49 CET | Update | https://www.mdpi.com/1996-1944/9/12/1019 |
| article html file updated | 22 September 2019 12:37 CEST | Update | - |
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| article html file updated | 28 December 2016 10:52 CET | Update | - |
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| article xml uploaded. | 17 December 2016 04:42 CET | Original file | https://www.mdpi.com/1996-1944/9/12/1019/xml |
| article pdf uploaded. | 17 December 2016 04:42 CET | Version of Record | https://www.mdpi.com/1996-1944/9/12/1019/pdf |
