| article html file updated | 13 August 2026 08:21 CEST | Update | https://www.mdpi.com/2076-0752/3/4/394 |
| article html file updated | 6 February 2020 14:23 CET | Update | N/A |
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| article html file updated | 14 February 2017 11:17 CET | Original file | N/A |
| article pdf uploaded. | 11 December 2014 12:01 CET | Version of Record | https://www.mdpi.com/2076-0752/3/4/394/pdf |
