| article html file updated | 9 February 2020 10:59 CET | Update | https://www.mdpi.com/1996-1073/11/4/730 |
| article html file updated | 1 October 2019 21:53 CEST | Update | N/A |
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| article xml uploaded. | 23 March 2018 16:38 CET | Original file | https://www.mdpi.com/1996-1073/11/4/730/xml |
| article pdf uploaded. | 23 March 2018 16:38 CET | Version of Record | https://www.mdpi.com/1996-1073/11/4/730/pdf |