| article html file updated | 15 August 2026 07:38 CEST | Update | https://www.mdpi.com/2076-2615/8/9/157 |
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| article pdf uploaded. | 18 September 2018 10:13 CEST | Version of Record | https://www.mdpi.com/2076-2615/8/9/157/pdf |
| article xml uploaded. | 18 September 2018 10:13 CEST | Update | https://www.mdpi.com/2076-2615/8/9/157/xml |
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