| article html file updated | 8 February 2020 05:37 CET | Update | https://www.mdpi.com/1996-1073/10/5/671 |
| article html file updated | 24 September 2019 18:43 CEST | Update | - |
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| article html file updated | 11 May 2017 12:40 CEST | Original file | - |
| article xml uploaded. | 11 May 2017 12:39 CEST | Update | https://www.mdpi.com/1996-1073/10/5/671/xml |
| article pdf uploaded. | 11 May 2017 12:39 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/5/671/pdf |
