| article html file updated | 31 August 2025 07:37 CEST | Update | https://www.mdpi.com/2227-9032/8/1/9 |
| article html file updated | 19 July 2022 20:41 CEST | Update | N/A |
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| article pdf uploaded. | 15 January 2020 10:28 CET | Updated version of record | https://www.mdpi.com/2227-9032/8/1/9/pdf |
| article xml uploaded. | 15 January 2020 10:28 CET | Update | https://www.mdpi.com/2227-9032/8/1/9/xml |
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| article supplementary file uploaded. | 27 December 2019 15:01 CET | - | https://www.mdpi.com/2227-9032/8/1/9#supplementary |
| article pdf uploaded. | 27 December 2019 15:01 CET | Version of Record | https://www.mdpi.com/2227-9032/8/1/9/pdf-vor |
| article xml file uploaded | 27 December 2019 15:01 CET | Original file | N/A |