| article html file updated | 6 February 2020 16:27 CET | Update | https://www.mdpi.com/2073-4441/7/3/939 |
| article html file updated | 7 May 2019 00:05 CEST | Update | - |
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| article html file updated | 21 August 2015 08:29 CEST | Update | - |
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| article xml file uploaded | 17 March 2015 05:03 CET | Original file | https://www.mdpi.com/2073-4441/7/3/939/xml |
| article pdf uploaded. | 10 March 2015 08:41 CET | Version of Record | https://www.mdpi.com/2073-4441/7/3/939/pdf |
