| article html file updated | 5 February 2020 16:19 CET | Update | https://www.mdpi.com/2073-4360/3/1/150 |
| article html file updated | 9 May 2019 02:46 CEST | Update | - |
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| article xml file uploaded | 14 August 2014 12:04 CEST | Original file | https://www.mdpi.com/2073-4360/3/1/150/xml |
| article html file updated | 6 February 2013 19:24 CET | Update | - |
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| article html file updated | 22 January 2013 08:06 CET | Original file | - |