| article html file updated | 6 February 2020 13:33 CET | Update | https://www.mdpi.com/2073-8994/6/4/926 |
| article html file updated | 7 May 2019 05:40 CEST | Update | - |
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| article xml file uploaded | 31 December 2014 03:31 CET | Original file | https://www.mdpi.com/2073-8994/6/4/926/xml |
| article pdf uploaded. | 12 November 2014 15:52 CET | Version of Record | https://www.mdpi.com/2073-8994/6/4/926/pdf |
