| article html file updated | 7 February 2020 19:48 CET | Update | https://www.mdpi.com/1996-1073/9/12/1074 |
| article html file updated | 22 September 2019 12:30 CEST | Update | - |
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| article html file updated | 28 December 2016 09:07 CET | Update | - |
| article html file updated | 16 December 2016 11:36 CET | Original file | - |
| article xml uploaded. | 16 December 2016 11:35 CET | Original file | https://www.mdpi.com/1996-1073/9/12/1074/xml |
| article pdf uploaded. | 16 December 2016 11:35 CET | Version of Record | https://www.mdpi.com/1996-1073/9/12/1074/pdf |
