| article html file updated | 5 February 2020 21:44 CET | Update | https://www.mdpi.com/2072-4292/4/9/2510 | 
| article html file updated | 8 May 2019 15:20 CEST | Update | - | 
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| article xml file uploaded | 14 August 2014 12:05 CEST | Update | https://www.mdpi.com/2072-4292/4/9/2510/xml | 
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| article html file updated | 16 January 2013 14:41 CET | Original file | - | 
| article xml file uploaded | 16 January 2013 14:41 CET | Original file | - |