| article html file updated | 15 August 2026 20:40 CEST | Update | https://www.mdpi.com/2305-6304/7/2/20 |
| article html file updated | 12 February 2020 02:09 CET | Update | N/A |
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| article pdf uploaded. | 1 April 2019 11:43 CEST | Version of Record | https://www.mdpi.com/2305-6304/7/2/20/pdf |
| article xml uploaded. | 1 April 2019 11:43 CEST | Update | https://www.mdpi.com/2305-6304/7/2/20/xml |
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