| article html file updated | 14 August 2026 07:27 CEST | Update | https://www.mdpi.com/1996-1073/8/9/9640 |
| article html file updated | 6 February 2020 22:27 CET | Update | N/A |
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| article html file updated | 24 September 2015 11:58 CEST | Original file | N/A |
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| article pdf uploaded. | 3 September 2015 15:21 CEST | Version of Record | https://www.mdpi.com/1996-1073/8/9/9640/pdf |
