| article html file updated | 29 August 2025 20:34 CEST | Update | https://www.mdpi.com/1996-1073/6/3/1409 |
| article html file updated | 15 July 2022 22:10 CEST | Update | N/A |
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| article html file updated | 13 February 2017 08:45 CET | Original file | N/A |
| article pdf uploaded. | 5 March 2013 16:55 CET | Version of Record | https://www.mdpi.com/1996-1073/6/3/1409/pdf |
