| article html file updated | 7 February 2020 09:00 CET | Update | https://www.mdpi.com/2077-1444/7/5/57 |
| article html file updated | 5 May 2019 15:14 CEST | Update | - |
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| article html file updated | 20 May 2016 09:11 CEST | Original file | - |
| article xml uploaded. | 20 May 2016 09:10 CEST | Original file | https://www.mdpi.com/2077-1444/7/5/57/xml |
| article pdf uploaded. | 20 May 2016 09:10 CEST | Version of Record | https://www.mdpi.com/2077-1444/7/5/57/pdf |
