| article html file updated | 8 February 2020 10:14 CET | Update | https://new.mdpi.com/2073-4360/9/7/219 |
| article html file updated | 25 September 2019 18:50 CEST | Update | - |
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| article html file updated | 2 August 2017 04:17 CEST | Update | - |
| article html file updated | 6 July 2017 06:01 CEST | Original file | - |
| article xml uploaded. | 6 July 2017 05:59 CEST | Update | https://new.mdpi.com/2073-4360/9/7/219/xml |
| article pdf uploaded. | 6 July 2017 05:59 CEST | Version of Record | https://new.mdpi.com/2073-4360/9/7/219/pdf |
