| article html file updated | 29 August 2025 21:31 CEST | Update | https://www.mdpi.com/1999-4915/7/2/604 |
| article html file updated | 15 July 2022 23:51 CEST | Update | - |
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| article xml file uploaded | 10 March 2015 03:30 CET | Update | https://www.mdpi.com/1999-4915/7/2/604/xml |
| article html file updated | 13 February 2015 08:07 CET | Original file | - |
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| article pdf uploaded. | 11 February 2015 14:19 CET | Updated version of record | https://www.mdpi.com/1999-4915/7/2/604/pdf |
| article pdf uploaded. | 10 February 2015 10:49 CET | Version of Record | https://www.mdpi.com/1999-4915/7/2/604/pdf-vor |
