| article html file updated | 6 February 2020 02:38 CET | Update | https://www.mdpi.com/2072-6643/5/6/2173 |
| article html file updated | 19 September 2019 21:47 CEST | Update | - |
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| article html file updated | 6 August 2013 15:59 CEST | Original file | - |
| article xml file uploaded | 6 August 2013 15:59 CEST | Original file | https://www.mdpi.com/2072-6643/5/6/2173/xml |
| article pdf uploaded. | 14 June 2013 12:28 CEST | Version of Record | https://www.mdpi.com/2072-6643/5/6/2173/pdf |
