| article html file updated | 9 February 2020 18:44 CET | Update | https://www.mdpi.com/1999-4907/9/6/286 |
| article html file updated | 3 October 2019 21:24 CEST | Update | - |
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| article xml uploaded. | 24 May 2018 11:07 CEST | Update | https://www.mdpi.com/1999-4907/9/6/286/xml |
| article pdf uploaded. | 24 May 2018 11:05 CEST | Updated version of record | https://www.mdpi.com/1999-4907/9/6/286/pdf |
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