| article html file updated | 12 August 2026 21:54 CEST | Update | https://www.mdpi.com/1999-4915/6/1/189 |
| article html file updated | 29 August 2025 20:55 CEST | Update | N/A |
| article html file updated | 15 July 2022 22:48 CEST | Update | N/A |
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| article html file updated | 14 August 2014 12:06 CEST | Update | N/A |
| article xml file uploaded | 14 August 2014 12:06 CEST | Update | https://www.mdpi.com/1999-4915/6/1/189/xml |
| article html file updated | 17 February 2014 12:48 CET | Original file | N/A |
| article xml file uploaded | 17 February 2014 12:48 CET | Original file | N/A |
| article pdf uploaded. | 21 January 2014 16:20 CET | Updated version of record | https://www.mdpi.com/1999-4915/6/1/189/pdf |
| article pdf uploaded. | 14 January 2014 09:22 CET | Version of Record | https://www.mdpi.com/1999-4915/6/1/189/pdf-vor |
