| article html file updated | 6 February 2020 22:53 CET | Update | https://www.mdpi.com/1424-8247/8/3/590 |
| article html file updated | 6 May 2019 11:11 CEST | Update | - |
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| article pdf uploaded. | 17 September 2015 10:31 CEST | Version of Record | https://www.mdpi.com/1424-8247/8/3/590/pdf |