| article html file updated | 6 February 2020 05:43 CET | Update | https://www.mdpi.com/2077-0383/2/4/260 |
| article html file updated | 20 September 2019 03:29 CEST | Update | - |
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| article xml file uploaded | 25 June 2015 12:08 CEST | Update | https://www.mdpi.com/2077-0383/2/4/260/xml |
| article html file updated | 16 December 2014 04:50 CET | Update | - |
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| article html file updated | 10 December 2014 09:53 CET | Original file | - |
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| article pdf uploaded. | 22 November 2013 11:00 CET | Version of Record | https://www.mdpi.com/2077-0383/2/4/260/pdf |
