| article html file updated | 29 August 2025 21:05 CEST | Update | https://www.mdpi.com/2075-5309/4/2/222 |
| article html file updated | 15 July 2022 23:04 CEST | Update | N/A |
| article html file updated | 6 February 2020 09:33 CET | Update | N/A |
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| article xml file uploaded | 28 October 2015 11:04 CET | Original file | https://www.mdpi.com/2075-5309/4/2/222/xml |
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| article pdf uploaded. | 30 May 2014 17:11 CEST | Updated version of record | https://www.mdpi.com/2075-5309/4/2/222/pdf |
| article pdf uploaded. | 28 May 2014 10:51 CEST | Updated version of record | https://www.mdpi.com/2075-5309/4/2/222/pdf-vor |
| article pdf uploaded. | 27 May 2014 15:33 CEST | Version of Record | https://www.mdpi.com/2075-5309/4/2/222/pdf-vor |
