| article html file updated | 9 February 2020 00:02 CET | Update | https://www.mdpi.com/1996-1073/10/12/2118 |
| article html file updated | 29 September 2019 04:55 CEST | Update | - |
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| article html file updated | 13 December 2017 16:09 CET | Original file | - |
| article xml uploaded. | 13 December 2017 16:08 CET | Original file | https://www.mdpi.com/1996-1073/10/12/2118/xml |
| article pdf uploaded. | 13 December 2017 16:08 CET | Version of Record | https://www.mdpi.com/1996-1073/10/12/2118/pdf |
