| article html file updated | 9 February 2020 12:22 CET | Update | https://www.mdpi.com/1999-4907/9/4/182 |
| article html file updated | 2 October 2019 05:58 CEST | Update | - |
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| article html file updated | 3 April 2018 17:17 CEST | Original file | - |
| article xml uploaded. | 3 April 2018 17:16 CEST | Original file | https://www.mdpi.com/1999-4907/9/4/182/xml |
| article pdf uploaded. | 3 April 2018 17:16 CEST | Version of Record | https://www.mdpi.com/1999-4907/9/4/182/pdf |