| article html file updated | 8 February 2020 05:02 CET | Update | https://www.mdpi.com/1424-8247/10/2/44 |
| article html file updated | 24 September 2019 15:39 CEST | Update | N/A |
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| article pdf uploaded. | 4 May 2017 12:54 CEST | Version of Record | https://www.mdpi.com/1424-8247/10/2/44/pdf |