| article html file updated | 13 August 2026 06:12 CEST | Update | https://www.mdpi.com/2076-0787/3/4/645 |
| article html file updated | 6 February 2020 13:16 CET | Update | N/A |
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| article html file updated | 16 March 2017 06:41 CET | Original file | N/A |
| article pdf uploaded. | 30 October 2014 12:50 CET | Version of Record | https://www.mdpi.com/2076-0787/3/4/645/pdf |
