| article html file updated | 7 February 2020 12:40 CET | Update | https://www.mdpi.com/2225-1146/4/3/33 |
| article html file updated | 5 May 2019 08:20 CEST | Update | - |
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| article xml uploaded. | 1 August 2016 11:58 CEST | Original file | https://www.mdpi.com/2225-1146/4/3/33/xml |
| article pdf uploaded. | 1 August 2016 11:58 CEST | Version of Record | https://www.mdpi.com/2225-1146/4/3/33/pdf |
