| article html file updated | 30 August 2025 10:51 CEST | Update | https://www.mdpi.com/2218-273X/9/1/20 |
| article html file updated | 21 August 2025 20:26 CEST | Update | - |
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| article html file updated | 12 January 2019 02:07 CET | Original file | - |
| article pdf uploaded. | 11 January 2019 07:08 CET | Updated version of record | https://www.mdpi.com/2218-273X/9/1/20/pdf |
| article xml uploaded. | 11 January 2019 07:08 CET | Update | https://www.mdpi.com/2218-273X/9/1/20/xml |
| article xml file uploaded | 11 January 2019 07:08 CET | Update | - |
| article pdf uploaded. | 10 January 2019 15:11 CET | Updated version of record | https://www.mdpi.com/2218-273X/9/1/20/pdf-vor |
| article pdf uploaded. | 10 January 2019 15:10 CET | Version of Record | https://www.mdpi.com/2218-273X/9/1/20/pdf-vor |
| article xml file uploaded | 10 January 2019 15:10 CET | Original file | - |
