| article html file updated | 13 August 2026 21:07 CEST | Update | https://www.mdpi.com/2076-0760/4/2/393 |
| article html file updated | 6 February 2020 18:54 CET | Update | N/A |
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| article pdf uploaded. | 22 May 2015 12:14 CEST | Version of Record | https://www.mdpi.com/2076-0760/4/2/393/pdf |
