| article html file updated | 7 February 2020 13:35 CET | Update | https://www.mdpi.com/2227-9059/4/3/20 |
| article html file updated | 5 May 2019 06:39 CEST | Update | N/A |
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| article xml uploaded. | 19 August 2016 11:29 CEST | Original file | https://www.mdpi.com/2227-9059/4/3/20/xml |
| article pdf uploaded. | 19 August 2016 11:29 CEST | Version of Record | https://www.mdpi.com/2227-9059/4/3/20/pdf |
