| article html file updated | 7 February 2020 21:33 CET | Update | https://www.mdpi.com/2071-1050/9/1/123 |
| article html file updated | 22 September 2019 21:50 CEST | Update | - |
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| article html file updated | 7 February 2017 10:18 CET | Update | - |
| article html file updated | 16 January 2017 09:52 CET | Original file | - |
| article xml uploaded. | 16 January 2017 09:51 CET | Original file | https://www.mdpi.com/2071-1050/9/1/123/xml |
| article pdf uploaded. | 16 January 2017 09:51 CET | Version of Record | https://www.mdpi.com/2071-1050/9/1/123/pdf |
