| article html file updated | 7 February 2020 07:18 CET | Update | https://www.mdpi.com/2076-3905/5/2/8 |
| article html file updated | 5 May 2019 18:33 CEST | Update | - |
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| article html file updated | 11 July 2016 10:02 CEST | Update | - |
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| article xml uploaded. | 15 April 2016 09:06 CEST | Original file | https://www.mdpi.com/2076-3905/5/2/8/xml |
| article pdf uploaded. | 15 April 2016 09:06 CEST | Version of Record | https://www.mdpi.com/2076-3905/5/2/8/pdf |
