| article html file updated | 7 February 2020 10:45 CET | Update | https://www.mdpi.com/1424-8220/16/7/976 |
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| article xml uploaded. | 24 June 2016 14:37 CEST | Update | https://www.mdpi.com/1424-8220/16/7/976/xml |
| article pdf uploaded. | 24 June 2016 14:37 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/7/976/pdf |