| article html file updated | 10 February 2020 09:26 CET | Update | https://www.mdpi.com/2227-9067/5/9/123 |
| article html file updated | 7 October 2019 12:21 CEST | Update | - |
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| article html file updated | 27 September 2018 11:54 CEST | Update | - |
| article html file updated | 5 September 2018 16:44 CEST | Original file | - |
| article xml uploaded. | 5 September 2018 16:43 CEST | Original file | https://www.mdpi.com/2227-9067/5/9/123/xml |
| article pdf uploaded. | 5 September 2018 16:43 CEST | Version of Record | https://www.mdpi.com/2227-9067/5/9/123/pdf |
