| article html file updated | 29 August 2025 21:01 CEST | Update | https://www.mdpi.com/2076-3417/4/2/171 |
| article html file updated | 15 July 2022 22:58 CEST | Update | N/A |
| article html file updated | 6 February 2020 08:25 CET | Update | N/A |
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| article html file updated | 20 August 2015 02:21 CEST | Original file | N/A |
| article pdf uploaded. | 8 April 2014 08:58 CEST | Version of Record | https://www.mdpi.com/2076-3417/4/2/171/pdf |
