| article html file updated | 6 February 2020 14:11 CET | Update | https://www.mdpi.com/2079-7737/3/4/866 |
| article html file updated | 7 May 2019 04:29 CEST | Update | - |
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| article html file updated | 31 December 2014 10:30 CET | Original file | - |
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| article supplementary file uploaded. | 4 December 2014 15:46 CET | - | https://www.mdpi.com/2079-7737/3/4/866#supplementary |
| article pdf uploaded. | 4 December 2014 15:46 CET | Version of Record | https://www.mdpi.com/2079-7737/3/4/866/pdf |
