| article html file updated | 9 February 2020 00:28 CET | Update | https://www.mdpi.com/1996-1073/10/12/2161 |
| article html file updated | 29 September 2019 07:34 CEST | Update | N/A |
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| article xml uploaded. | 18 December 2017 17:19 CET | Original file | https://www.mdpi.com/1996-1073/10/12/2161/xml |
| article pdf uploaded. | 18 December 2017 17:19 CET | Version of Record | https://www.mdpi.com/1996-1073/10/12/2161/pdf |
