| article html file updated | 29 August 2025 20:52 CEST | Update | https://www.mdpi.com/2073-4409/2/4/732 |
| article html file updated | 15 July 2022 22:44 CEST | Update | N/A |
| article html file updated | 6 February 2020 06:00 CET | Update | N/A |
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| article html file updated | 19 August 2015 12:24 CEST | Original file | N/A |
| article pdf uploaded. | 5 December 2013 11:06 CET | Version of Record | https://www.mdpi.com/2073-4409/2/4/732/pdf |
