| article html file updated | 7 February 2020 07:25 CET | Update | https://www.mdpi.com/2073-8994/8/4/23 |
| article html file updated | 21 September 2019 15:24 CEST | Update | - |
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| article xml uploaded. | 18 April 2016 13:41 CEST | Original file | https://www.mdpi.com/2073-8994/8/4/23/xml |
| article pdf uploaded. | 18 April 2016 13:41 CEST | Version of Record | https://www.mdpi.com/2073-8994/8/4/23/pdf |
