| article html file updated | 2 September 2025 01:43 CEST | Update | https://www.mdpi.com/2226-471X/6/2/60 |
| article html file updated | 25 July 2022 09:13 CEST | Update | - |
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| article xml uploaded. | 25 March 2021 11:46 CET | Update | https://www.mdpi.com/2226-471X/6/2/60/xml |
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