| article html file updated | 7 February 2020 07:16 CET | Update | https://www.mdpi.com/2079-4991/6/4/70 |
| article html file updated | 5 May 2019 18:38 CEST | Update | - |
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| article html file updated | 24 February 2017 10:28 CET | Update | - |
| article html file updated | 29 April 2016 06:14 CEST | Update | - |
| article html file updated | 14 April 2016 14:08 CEST | Original file | - |
| article xml uploaded. | 14 April 2016 14:07 CEST | Update | https://www.mdpi.com/2079-4991/6/4/70/xml |
| article pdf uploaded. | 14 April 2016 14:07 CEST | Version of Record | https://www.mdpi.com/2079-4991/6/4/70/pdf |
