| article html file updated | 8 February 2020 23:04 CET | Update | https://www.mdpi.com/1996-1073/10/12/2051 |
| article html file updated | 28 September 2019 23:29 CEST | Update | - |
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| article xml uploaded. | 4 December 2017 14:51 CET | Original file | https://www.mdpi.com/1996-1073/10/12/2051/xml |
| article pdf uploaded. | 4 December 2017 14:51 CET | Version of Record | https://www.mdpi.com/1996-1073/10/12/2051/pdf |
