| article html file updated | 30 August 2025 07:31 CEST | Update | https://www.mdpi.com/2227-7102/8/4/165 |
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| article pdf uploaded. | 5 October 2018 12:33 CEST | Version of Record | https://www.mdpi.com/2227-7102/8/4/165/pdf |
| article xml uploaded. | 5 October 2018 12:33 CEST | Update | https://www.mdpi.com/2227-7102/8/4/165/xml |
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