| article html file updated | 5 February 2020 21:24 CET | Update | https://www.mdpi.com/1999-4923/4/3/354 |
| article html file updated | 8 May 2019 16:01 CEST | Update | - |
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| article html file updated | 14 August 2014 12:04 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:04 CEST | Original file | https://www.mdpi.com/1999-4923/4/3/354/xml |
| article html file updated | 7 February 2013 13:59 CET | Update | - |
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| article html file updated | 26 January 2013 19:11 CET | Update | - |
| article html file updated | 23 January 2013 23:10 CET | Original file | - |
