| article html file updated | 8 February 2020 23:30 CET | Update | https://www.mdpi.com/2304-6775/5/4/27 |
| article html file updated | 2 May 2019 09:53 CEST | Update | - |
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| article html file updated | 2 January 2018 12:19 CET | Update | - |
| article html file updated | 8 December 2017 09:55 CET | Original file | - |
| article xml uploaded. | 8 December 2017 09:54 CET | Original file | https://www.mdpi.com/2304-6775/5/4/27/xml |
| article pdf uploaded. | 8 December 2017 09:54 CET | Version of Record | https://www.mdpi.com/2304-6775/5/4/27/pdf |
