| article html file updated | 7 February 2020 12:01 CET | Update | https://www.mdpi.com/2227-7102/6/3/22 |
| article html file updated | 5 May 2019 09:35 CEST | Update | - |
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| article html file updated | 20 July 2016 13:51 CEST | Original file | - |
| article xml uploaded. | 20 July 2016 13:50 CEST | Original file | https://www.mdpi.com/2227-7102/6/3/22/xml |
| article pdf uploaded. | 20 July 2016 13:50 CEST | Version of Record | https://www.mdpi.com/2227-7102/6/3/22/pdf |
