| article html file updated | 30 August 2025 20:54 CEST | Update | https://www.mdpi.com/2304-8158/8/6/199 |
| article html file updated | 20 July 2022 15:52 CEST | Update | - |
| article html file updated | 12 February 2020 18:30 CET | Update | - |
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| article pdf uploaded. | 8 June 2019 12:16 CEST | Version of Record | https://www.mdpi.com/2304-8158/8/6/199/pdf |
| article xml uploaded. | 8 June 2019 12:16 CEST | Update | https://www.mdpi.com/2304-8158/8/6/199/xml |
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