| article html file updated | 8 February 2020 10:39 CET | Update | https://www.mdpi.com/2227-9709/4/3/19 |
| article html file updated | 25 September 2019 20:52 CEST | Update | - |
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| article html file updated | 27 October 2017 10:26 CEST | Update | - |
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| article xml uploaded. | 10 July 2017 15:22 CEST | Original file | https://www.mdpi.com/2227-9709/4/3/19/xml |
| article pdf uploaded. | 10 July 2017 15:22 CEST | Version of Record | https://www.mdpi.com/2227-9709/4/3/19/pdf |
