| article html file updated | 7 February 2020 07:00 CET | Update | https://www.mdpi.com/2225-1146/4/2/22 |
| article html file updated | 5 May 2019 19:12 CEST | Update | - |
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| article html file updated | 8 April 2016 14:35 CEST | Original file | - |
| article xml uploaded. | 8 April 2016 14:34 CEST | Original file | https://www.mdpi.com/2225-1146/4/2/22/xml |
| article pdf uploaded. | 8 April 2016 14:34 CEST | Version of Record | https://www.mdpi.com/2225-1146/4/2/22/pdf |
