| article html file updated | 16 August 2026 22:04 CEST | Update | https://www.mdpi.com/1996-1073/13/1/90 |
| article html file updated | 24 December 2025 16:51 CET | Update | N/A |
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| article html file updated | 26 December 2019 03:17 CET | Original file | N/A |
| article pdf uploaded. | 26 December 2019 03:16 CET | Updated version of record | https://www.mdpi.com/1996-1073/13/1/90/pdf |
| article xml uploaded. | 26 December 2019 03:16 CET | Update | https://www.mdpi.com/1996-1073/13/1/90/xml |
| article xml file uploaded | 26 December 2019 03:16 CET | Update | N/A |
| article pdf uploaded. | 23 December 2019 15:11 CET | Version of Record | https://www.mdpi.com/1996-1073/13/1/90/pdf-vor |
| article xml file uploaded | 23 December 2019 15:11 CET | Original file | N/A |
