| article html file updated | 12 August 2026 22:26 CEST | Update | https://www.mdpi.com/2227-7072/2/1/15 |
| article html file updated | 29 August 2025 20:57 CEST | Update | N/A |
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| article xml file uploaded | 14 August 2014 12:05 CEST | Update | https://www.mdpi.com/2227-7072/2/1/15/xml |
| article html file updated | 24 June 2014 12:11 CEST | Original file | N/A |
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| article pdf uploaded. | 18 February 2014 11:44 CET | Updated version of record | https://www.mdpi.com/2227-7072/2/1/15/pdf |
| article pdf uploaded. | 17 February 2014 15:43 CET | Version of Record | https://www.mdpi.com/2227-7072/2/1/15/pdf-vor |
