| article html file updated | 6 February 2020 19:04 CET | Update | https://new.mdpi.com/2072-6643/7/6/4068 |
| article html file updated | 6 May 2019 19:03 CEST | Update | - |
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| article html file updated | 21 August 2015 12:41 CEST | Update | - |
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| article xml file uploaded | 2 July 2015 10:14 CEST | Original file | https://new.mdpi.com/2072-6643/7/6/4068/xml |
| article pdf uploaded. | 27 May 2015 13:01 CEST | Version of Record | https://new.mdpi.com/2072-6643/7/6/4068/pdf |
