| article html file updated | 7 February 2020 22:04 CET | Update | https://www.mdpi.com/1996-1073/10/1/146 |
| article html file updated | 23 September 2019 00:40 CEST | Update | - |
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| article html file updated | 7 February 2017 10:13 CET | Update | - |
| article html file updated | 23 January 2017 15:25 CET | Original file | - |
| article xml uploaded. | 23 January 2017 15:23 CET | Original file | https://www.mdpi.com/1996-1073/10/1/146/xml |
| article pdf uploaded. | 23 January 2017 15:23 CET | Version of Record | https://www.mdpi.com/1996-1073/10/1/146/pdf |
