| article html file updated | 30 August 2025 22:25 CEST | Update | https://www.mdpi.com/2311-5521/4/3/129 |
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| article pdf uploaded. | 12 July 2019 12:20 CEST | Updated version of record | https://www.mdpi.com/2311-5521/4/3/129/pdf |
| article xml uploaded. | 12 July 2019 12:20 CEST | Update | https://www.mdpi.com/2311-5521/4/3/129/xml |
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