| article html file updated | 7 February 2020 08:56 CET | Update | https://www.mdpi.com/1424-8247/9/2/28 |
| article html file updated | 21 September 2019 17:27 CEST | Update | - |
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| article xml uploaded. | 19 May 2016 08:29 CEST | Original file | https://www.mdpi.com/1424-8247/9/2/28/xml |
| article pdf uploaded. | 19 May 2016 08:29 CEST | Version of Record | https://www.mdpi.com/1424-8247/9/2/28/pdf |
