| article html file updated | 6 February 2020 13:52 CET | Update | https://www.mdpi.com/2077-0383/3/4/1333 |
| article html file updated | 20 September 2019 15:10 CEST | Update | - |
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| article html file updated | 29 June 2017 13:17 CEST | Update | - |
| article html file updated | 21 August 2015 02:31 CEST | Update | - |
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| article xml file uploaded | 25 June 2015 12:08 CEST | Update | https://www.mdpi.com/2077-0383/3/4/1333/xml |
| article html file updated | 14 January 2015 05:17 CET | Original file | - |
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| article pdf uploaded. | 24 November 2014 14:10 CET | Version of Record | https://www.mdpi.com/2077-0383/3/4/1333/pdf |
