| article html file updated | 7 February 2020 21:24 CET | Update | https://www.mdpi.com/1996-1073/10/1/90 |
| article html file updated | 22 September 2019 21:00 CEST | Update | - |
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| article html file updated | 7 February 2017 09:57 CET | Update | - |
| article html file updated | 13 January 2017 13:13 CET | Original file | - |
| article xml uploaded. | 13 January 2017 13:12 CET | Original file | https://www.mdpi.com/1996-1073/10/1/90/xml |
| article pdf uploaded. | 13 January 2017 13:12 CET | Version of Record | https://www.mdpi.com/1996-1073/10/1/90/pdf |
