| article html file updated | 14 August 2026 19:19 CEST | Update | https://www.mdpi.com/2409-515X/3/4/31 |
| article html file updated | 14 September 2021 09:19 CEST | Update | N/A |
| article xml uploaded. | 14 September 2021 09:18 CEST | Update | https://www.mdpi.com/2409-515X/3/4/31/xml |
| article html file updated | 20 November 2017 12:39 CET | Original file | N/A |
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| article pdf uploaded. | 20 November 2017 12:38 CET | Version of Record | https://www.mdpi.com/2409-515X/3/4/31/pdf |
