| article html file updated | 14 August 2026 22:58 CEST | Update | https://www.mdpi.com/2504-3900/2/6/242 |
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| article pdf uploaded. | 23 March 2018 04:31 CET | Updated version of record | https://www.mdpi.com/2504-3900/2/6/242/pdf |
| article pdf uploaded. | 6 March 2018 08:14 CET | Version of Record | https://www.mdpi.com/2504-3900/2/6/242/pdf-vor |
