| article html file updated | 23 October 2025 07:49 CEST | Update | https://www.mdpi.com/2218-1997/6/2/27 |
| article html file updated | 31 August 2025 10:33 CEST | Update | N/A |
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| article xml uploaded. | 24 February 2020 06:58 CET | Update | https://www.mdpi.com/2218-1997/6/2/27/xml |
| article pdf uploaded. | 3 February 2020 11:20 CET | Version of Record | https://www.mdpi.com/2218-1997/6/2/27/pdf |
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