| article html file updated | 30 August 2025 08:05 CEST | Update | https://www.mdpi.com/2227-7102/8/4/180 |
| article html file updated | 17 July 2022 05:47 CEST | Update | - |
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| article pdf uploaded. | 23 October 2018 11:04 CEST | Version of Record | https://www.mdpi.com/2227-7102/8/4/180/pdf |
| article xml uploaded. | 23 October 2018 11:04 CEST | Update | https://www.mdpi.com/2227-7102/8/4/180/xml |
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