| article html file updated | 9 February 2020 13:28 CET | Update | https://www.mdpi.com/2073-4409/7/4/29 |
| article html file updated | 2 October 2019 12:44 CEST | Update | - |
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| article html file updated | 12 April 2018 05:38 CEST | Original file | - |
| article xml uploaded. | 12 April 2018 05:36 CEST | Update | https://www.mdpi.com/2073-4409/7/4/29/xml |
| article pdf uploaded. | 12 April 2018 05:36 CEST | Version of Record | https://www.mdpi.com/2073-4409/7/4/29/pdf |
