| article html file updated | 7 February 2020 13:02 CET | Update | https://www.mdpi.com/2076-0787/5/3/67 |
| article html file updated | 5 May 2019 07:38 CEST | Update | - |
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| article html file updated | 11 August 2016 11:48 CEST | Update | - |
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| article xml uploaded. | 9 August 2016 10:25 CEST | Original file | https://www.mdpi.com/2076-0787/5/3/67/xml |
| article pdf uploaded. | 9 August 2016 10:25 CEST | Version of Record | https://www.mdpi.com/2076-0787/5/3/67/pdf |
