| article html file updated | 6 February 2020 00:42 CET | Update | https://www.mdpi.com/2075-1729/3/1/234 |
| article html file updated | 8 May 2019 08:03 CEST | Update | - |
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| article html file updated | 17 June 2015 06:53 CEST | Update | - |
| article html file updated | 24 July 2014 10:32 CEST | Original file | - |
| article xml file uploaded | 24 July 2014 10:32 CEST | Original file | https://www.mdpi.com/2075-1729/3/1/234/xml |
| article pdf uploaded. | 27 February 2013 09:40 CET | Version of Record | https://www.mdpi.com/2075-1729/3/1/234/pdf |
