| article html file updated | 29 August 2025 21:33 CEST | Update | https://www.mdpi.com/1996-1073/8/3/1663 |
| article html file updated | 15 July 2022 23:54 CEST | Update | N/A |
| article html file updated | 6 February 2020 16:11 CET | Update | N/A |
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| article html file updated | 21 August 2015 08:01 CEST | Original file | N/A |
| article pdf uploaded. | 27 February 2015 14:11 CET | Version of Record | https://www.mdpi.com/1996-1073/8/3/1663/pdf |
