| article html file updated | 6 February 2020 07:28 CET | Update | https://www.mdpi.com/2073-4352/4/1/11 |
| article html file updated | 7 May 2019 18:14 CEST | Update | - |
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| article html file updated | 19 August 2015 21:29 CEST | Update | - |
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| article xml file uploaded | 23 March 2015 07:42 CET | Original file | https://www.mdpi.com/2073-4352/4/1/11/xml |
| article pdf uploaded. | 24 February 2014 09:53 CET | Version of Record | https://www.mdpi.com/2073-4352/4/1/11/pdf |
